subject:(Charge transport)

Wake Forest University

1. Mei, Yaochuan. CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS.

Degree: 2016, Wake Forest University

► Organic semiconductors and hybrid organic/inorganic perovskite semiconductors can address new applications, which are off-limits for conventional silicon-based electronics. We fabricate organic field-effect transistors (OFETs) and… (more)

Subjects/Keywords: charge transport

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APA (6^th Edition):

Mei, Y. (2016). CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS. (Thesis). Wake Forest University. Retrieved from http://hdl.handle.net/10339/59262

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mei, Yaochuan. “CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS.” 2016. Thesis, Wake Forest University. Accessed October 15, 2019. http://hdl.handle.net/10339/59262.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mei, Yaochuan. “CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS.” 2016. Web. 15 Oct 2019.

Vancouver:

Mei Y. CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS. [Internet] [Thesis]. Wake Forest University; 2016. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/10339/59262.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mei Y. CHARGE TRANSPORT IN ORGANIC AND HYBRID PEROVSKITE FIELD EFFECT TRANSISTORS. [Thesis]. Wake Forest University; 2016. Available from: http://hdl.handle.net/10339/59262

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta

2. Olson, Steven. Charge transport in molecular junctions and microfluidic devices.

Degree: MS, Department of Physics, 2010, University of Alberta

URL: https://era.library.ualberta.ca/files/gx41mj807

► Electro-transmittance of molecular junctions was characterized electrically and studied optically at 410nm and 532nm. Between 1kHz and 100kHz there was no qualitative difference between the… (more)

Subjects/Keywords: microfluidic; molecular junctions; charge transport

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APA (6^th Edition):

Olson, S. (2010). Charge transport in molecular junctions and microfluidic devices. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/gx41mj807

Chicago Manual of Style (16^th Edition):

Olson, Steven. “Charge transport in molecular junctions and microfluidic devices.” 2010. Masters Thesis, University of Alberta. Accessed October 15, 2019. https://era.library.ualberta.ca/files/gx41mj807.

MLA Handbook (7^th Edition):

Olson, Steven. “Charge transport in molecular junctions and microfluidic devices.” 2010. Web. 15 Oct 2019.

Vancouver:

Olson S. Charge transport in molecular junctions and microfluidic devices. [Internet] [Masters thesis]. University of Alberta; 2010. [cited 2019 Oct 15]. Available from: https://era.library.ualberta.ca/files/gx41mj807.

Council of Science Editors:

Olson S. Charge transport in molecular junctions and microfluidic devices. [Masters Thesis]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/gx41mj807

University of Texas – Austin

3. Danielson, Eric Lewis. Lateral device techniques for characterizing organic bulk heterojunction photovoltaic materials.

Degree: PhD, Materials Science and Engineering, 2014, University of Texas – Austin

URL: http://hdl.handle.net/2152/27144

► This work is focused on developing novel techniques for characterizing organic bulk heterojunction (BHJ) materials for organic photovoltaic (OPV) applications. Polymer:fullerene BHJs are a promising… (more)

▼ This work is focused on developing novel techniques for characterizing organic bulk heterojunction (BHJ) materials for organic photovoltaic (OPV) applications. Polymer:fullerene BHJs are a promising class of photovoltaic materials, but an improved understanding of the charge transport processes and materials science of BHJs is required for them to effectively compete with other photovoltaic systems. Key parameters of BHJ systems that need to be evaluated include both electron and hole mobilities, the carrier concentrations, the recombination mechanism and the recombination coefficient. For these studies, poly(3-hexylthiophene) (P3HT):(6,6)-phenyl C₆₁-butyric acid methyl ester (PCBM) have been characterized due to its wide use among researchers. Traditional characterization techniques have focused on transient measurements in a vertical device configuration, but we demonstrate the use of lateral BHJ devices as materials diagnostic platforms. Lateral devices allow for direct access to the active layer for spatially resolved and environmental effect measurements. The devices are also measured under steady state operation, similar to a working OPV cell. Under these conditions, lateral BHJ devices exhibit space charge limited transport behavior. A detailed charge transport model is presented to describe the potential, electric field, and carrier concentration profiles of lateral BHJ devices, as well as the current versus voltage characteristics of different regions of the device. We are able to calculate the slower carrier mobility from photocurrent measurements of lateral devices and the carrier mobility ratio from the device potential profile, even in ambipolar BHJ systems. In situ potentiometry is used to construct detailed potential profiles of the device channel and calculate both carrier mobilities. The carrier concentration and recombination coefficient are calculated from lateral conductivity measurements, and we show that bimolecular recombination is the dominant mechanism in bulk P3HT:PCBM. A simplified in situ potentiometry and photocurrent measurement technique is presented to measure the time evolution of organic BHJ performance. Due to the open geometry of the lateral BHJ device, we are also able to monitor the change in key charge transport parameters, including the recombination mechanism, in response to environmental degradation, analyte exposure, and ambient temperature. We show increased geminate recombination in P3HT:PC₇₁BM after prolonged light exposure. Lateral BHJ device measurements offer a useful complement to measurements on vertical photovoltaic structures and provide a more complete and detailed picture of OPV materials. Advisors/Committee Members: Dodabalapur, Ananth, 1963- (advisor).

Subjects/Keywords: Organic photovoltaics; Charge transport

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APA (6^th Edition):

Danielson, E. L. (2014). Lateral device techniques for characterizing organic bulk heterojunction photovoltaic materials. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/27144

Chicago Manual of Style (16^th Edition):

Danielson, Eric Lewis. “Lateral device techniques for characterizing organic bulk heterojunction photovoltaic materials.” 2014. Doctoral Dissertation, University of Texas – Austin. Accessed October 15, 2019. http://hdl.handle.net/2152/27144.

MLA Handbook (7^th Edition):

Danielson, Eric Lewis. “Lateral device techniques for characterizing organic bulk heterojunction photovoltaic materials.” 2014. Web. 15 Oct 2019.

Vancouver:

Danielson EL. Lateral device techniques for characterizing organic bulk heterojunction photovoltaic materials. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2014. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/2152/27144.

Council of Science Editors:

Danielson EL. Lateral device techniques for characterizing organic bulk heterojunction photovoltaic materials. [Doctoral Dissertation]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/27144

4. Champlain, Amandine. Étude de la dynamique des poussières lunaires et de leur impact sur les systèmes d'exploration : Study of lunar dust dynamic and of their impact on exploration systems.

Degree: Docteur es, Photonique et systèmes optoélectroniques, 2016, Toulouse, ISAE

URL: http://www.theses.fr/2016ESAE0041

►

L’exploration lunaire représente une part importante de l'activité des agences spatiales nationales. Les scientifiques se sont intéressés aux interactions de la surface lunaire avec le… (more)

▼

L’exploration lunaire représente une part importante de l'activité des agences spatiales nationales. Les scientifiques se sont intéressés aux interactions de la surface lunaire avec le plasma environnant et les appareils envoyés sur place. Les observations ont mis en évidence la présence de régolithe, formant une épaisse couche de poussières à la surface, et il a été constaté que ces particules sont très abrasives et tranchantes. Elles représentent un risque matériel important pour les équipements envoyés sur la Lune et la nécessité de comprendre les origines de leur transport est incontournable pour le bon déroulement des futures missions. Le mouvement de ces poussières peut, entre autres, être issu de phénomènes électrostatiques, particulièrement présents aux frontières ombre/lumière. Les observations d'un nuage de poussières au-dessus de la surface lunaire en sont la preuve. Cependant, les mécanismes à l'origine de ce nuage sont peu connus. Il est donc nécessaire de comprendre les interactions entre les poussières et l'environnement lunaire afin de prévenir la pollution d'appareils se trouvant à la surface. L'objectif de la thèse est de comprendre et de modéliser la charge et le transport électrostatique des poussières aux interfaces ombre/lumière. Le dispositif DROP a été développé afin d'observer le transport électrostatique de poussières et permettre une compréhension physique de cette dynamique. Les tests effectués ont permis de dégager les paramètres les plus importants dans la dynamique des poussières. Ils ont également rendu possible l'adaptation d'un modèle numérique préexistant qui a été contraint afin de le rendre plus représentatif de la situation lunaire.

The lunar exploration represents a major part of all national space agencies activities. The scientists have studied the interactions of the lunar surface with the surrounding plasma but also with equipment sent on the lunar surface. Observations have shown the presence of regolith particles covering the surface of the Moon. This layer of dust grains can be several meters thick and these dust particles are very abrasive and adhesive. They are an important risk for equipment sent on the Moon. Thus, the understanding of the origins of dust grains transport is vital to successfully plan future missions. e lunar dust dynamics can be produced by electrostatic phenomena, especially at boundaries between shadowed and unlit regions. Observations of a dust Cloud above the lunar surface are evidence of this dynamic. However, the mechanisms causing this dust Cloud are unknown. It is thus necessary to understand the interactions between dust grains and the lunar environment in order to prevent the pollution of equipment on the lunar surface. The objective of this PhD thesis is the understanding and the modelling of dust particles charge and electrostatic transport near boundaries between shadow and light. An experimental device has been developed to observe dust grains electrostatic transport and to allow a physical understanding of this dynamic. The tests…

Advisors/Committee Members: Roussel, Jean-François (thesis director), Matéo-Vélez, Jean-Charles (thesis director).

Subjects/Keywords: Transport électrostatique; Charge; Poussières; Conductivité; Electrostatic transport; Charge; Dust; Conductivity; 621

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APA (6^th Edition):

Champlain, A. (2016). Étude de la dynamique des poussières lunaires et de leur impact sur les systèmes d'exploration : Study of lunar dust dynamic and of their impact on exploration systems. (Doctoral Dissertation). Toulouse, ISAE. Retrieved from http://www.theses.fr/2016ESAE0041

Chicago Manual of Style (16^th Edition):

Champlain, Amandine. “Étude de la dynamique des poussières lunaires et de leur impact sur les systèmes d'exploration : Study of lunar dust dynamic and of their impact on exploration systems.” 2016. Doctoral Dissertation, Toulouse, ISAE. Accessed October 15, 2019. http://www.theses.fr/2016ESAE0041.

MLA Handbook (7^th Edition):

Champlain, Amandine. “Étude de la dynamique des poussières lunaires et de leur impact sur les systèmes d'exploration : Study of lunar dust dynamic and of their impact on exploration systems.” 2016. Web. 15 Oct 2019.

Vancouver:

Champlain A. Étude de la dynamique des poussières lunaires et de leur impact sur les systèmes d'exploration : Study of lunar dust dynamic and of their impact on exploration systems. [Internet] [Doctoral dissertation]. Toulouse, ISAE; 2016. [cited 2019 Oct 15]. Available from: http://www.theses.fr/2016ESAE0041.

Council of Science Editors:

Champlain A. Étude de la dynamique des poussières lunaires et de leur impact sur les systèmes d'exploration : Study of lunar dust dynamic and of their impact on exploration systems. [Doctoral Dissertation]. Toulouse, ISAE; 2016. Available from: http://www.theses.fr/2016ESAE0041

University of Illinois – Urbana-Champaign

5. Gupta, Chaitanya. Charge transfer at thin-film modified solid-liquid interfaces in the absence of redox-active moieties.

Degree: PhD, 0300, 2010, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/14605

► Advanced diagnostic systems that are capable of the early detection and the narrow therapeutic targeting of diseases represent the future for modern medicine. The development… (more)

▼ Advanced diagnostic systems that are capable of the early detection and the narrow therapeutic targeting of diseases represent the future for modern medicine. The development of highly sensitive, single molecule detection technologies with high throughput capabilities is a prerequisite to the large scale deployment of these modern diagnostic systems. Affinity based optical labels used to tag the biomarker of interest are the state-of-the art in biological detection technologies. However, the attachment of a large label molecule modifies the in-vivo physiological activity of the molecular marker. Besides, label based detection platforms tend to be low throughput and rather expensive. The overall goal of this dissertation is, therefore, to propose an alternative label-free spectroscopic platform that utilizes low-energy electrons as interrogating particles or waves to probe the non-equilibrium physical and chemical properties at a biased monolayer modified solid-liquid interface. The variation in the electronic flux due to the different physical and chemical interactions occurring at the monolayer modified solid-liquid interface is measured by the change in impedance of the electrochemical system as a function of applied potential and frequency. The characterization of the flux of electrons (???leakage??? currents) crossing the electrified monolayer modified solid-liquid interface in the absence of redox active moieties in the electrolyte is the first step in the development of such a label free methodology. An analytical method is presented in this dissertation that enables the quantitative analysis of the leakage current in the absence of specific information about the species in the electrolyte that couples weakly and non-adiabatically to the electronic orbitals of the metallic electrode. Application of the analytical method enables the identification of the different mechanisms by which leakage current flows through the insulating monolayer film. The current density is limited by Ohmic transport and by space charge at low and intermediate anodic potentials respectively. At higher anodic potentials, quantum mechanical tunneling of the electron from the ground-state energy level of the electrolytic ionic species to the electrode Fermi level becomes rate-limiting. On the other hand, for cathodic potentials, the charge flux is limited by the thermal activation of either the transferring electron or the dielectric molecules over a free energy barrier. The terms anodic and cathodic are defined with respect to a characteristic potential where the electric field in the monolayer becomes zero. The electrolytic species that participates in the charge transfer process is also identified. Properties of the monolayer-electrolyte interface that describe physical and chemical interactions between the electrolyte species and the monolayer modified surface are obtained from the analysis, demonstrating the applicability of the electrode-monolayer-electrolyte system as a sensing platform. An extension of the analysis… Advisors/Committee Members: Kenis, Paul J. A. (advisor), Shannon, Mark A. (advisor), Kenis, Paul J. A. (Committee Chair), Shannon, Mark A. (committee member), Scheeline, Alexander (committee member), Schroeder, Charles M. (committee member).

Subjects/Keywords: self-assembled monolayer; non-adiabatic charge transfer; adiabatic charge transfer; charge transport; redox-active

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gupta, C. (2010). Charge transfer at thin-film modified solid-liquid interfaces in the absence of redox-active moieties. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/14605

Chicago Manual of Style (16^th Edition):

Gupta, Chaitanya. “Charge transfer at thin-film modified solid-liquid interfaces in the absence of redox-active moieties.” 2010. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed October 15, 2019. http://hdl.handle.net/2142/14605.

MLA Handbook (7^th Edition):

Gupta, Chaitanya. “Charge transfer at thin-film modified solid-liquid interfaces in the absence of redox-active moieties.” 2010. Web. 15 Oct 2019.

Vancouver:

Gupta C. Charge transfer at thin-film modified solid-liquid interfaces in the absence of redox-active moieties. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2010. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/2142/14605.

Council of Science Editors:

Gupta C. Charge transfer at thin-film modified solid-liquid interfaces in the absence of redox-active moieties. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2010. Available from: http://hdl.handle.net/2142/14605

Vilnius Gediminas Technical University

6. Tolvaišienė, Sonata. Transport of charge carriers in ultrathin films of manganese oxides.

Degree: PhD, Physics, 2009, Vilnius Gediminas Technical University

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143224-76401 ;

►

The objective of this dissertation is to investigate lanthanum manganites, which exhibit colossal negative magnetoresistance and phase transitions from the paramagnetic state to the ferromagnetic… (more)

▼

The objective of this dissertation is to investigate lanthanum manganites, which exhibit colossal negative magnetoresistance and phase transitions from the paramagnetic state to the ferromagnetic state. The magnetoresistance and its ani-zotriopy of thin epitaxial manganite films at low (up to  0.5 T) magnetic fields, as well as effects induced by strong pulsed magnetic and electric fields were in-vestigated. It was demonstrated how it can be used in the development of magne-tic field sensors, short electric pulse forming devices and amplitude modulators. It was found that in the case of ultra-thin La-Sr-MnO3 films, the sign and value of the magnetoresistance anisotropy at low magnetic fields depends on the thickness of the films. An explanation of these results was proposed using the mean field approach and taking into consideration that the structure of the films changes with its thickness. A reversible thermoelectrical switching effect was discovered and investigated. A new method for nanosecond duration electrical pulses amplitude modulation by an external magnetic field using La0.87Sr0.17MnO3 films was suggested and experimentally verified. This dissertation consists of the abstracts in Lithuanian and English, intro-duction, six chapters, the main results and conclusions and list of literature. The introduction contains topicality and problem, the aim of the work, tasks, scientific novelty, practical value, approval of the results, statement to be de-fended and... [to full text]

Disertacijoje nagrinėjami lantano manganitai, pasižymintys faziniu virsmu iš paramagnetinės į feromagnetinę būseną bei milžiniškos neigiamos magnetovar-žos efektu. Tiriami magnetovaržos ir jos anizotropijos efektai silpnuose (iki  0,5 T) magnetiniuose laukuose bei stiprių impulsinių srovių ir magnetinių laukų sukelti efektai plonuose epitaksiniuose manganitų sluoksniuose. Pateikiami pasiūlymai tyrimo rezultatus panaudoti kuriant magnetinio lauko jutiklius, spar-čiųjų elektrinių impulsų formuotuvus bei amplitudės moduliatorius. Tiriant sil-pnų magnetinių laukų poveikį ultraplonųjų La-Sr-MnO3 sluoksnių elektriniam laidumui, buvo nustatyta, kad magnetovaržos anizotropijos ženklas ir vertė šiuo-se laukuose priklauso nuo sluoksnio storio. Pateiktas modelis, paaiškinantis eks-perimentinius rezultatus, paremtas vidutinio lauko artiniu ir įskaitantis sluoksnio struktūros kitimą kintant jo storiui. Aptiktas ir ištirtas grįžtamasis termoelektrinis nestabilumas, išaiškintos šio reiškinio atsiradimo priežastys. Pasiūlytas ir ekspe-rimentiškai realizuotas naujas ns trukmės elektrinių impulsų amplitudės modulia-vimo išoriniu magnetiniu lauku būdas, naudojant epitaksinius La0,87Sr0,17MnO3 sluoksnius. Disertaciją sudaro reziumė lietuvių ir anglų kalbomis, įvadas, šeši skyriai, pagrindiniai rezultatai ir išvados, literatūros sąrašas, publikacijų disertacijos tema sąrašas. Įvadiniame skyriuje nagrinėjamas problemos aktualumas, formuluojamas darbo tikslas bei uždaviniai, aprašomas mokslinis... [toliau žr. visą tekstą]

Advisors/Committee Members: Balevičius, Saulius (Doctoral dissertation supervisor), Jukna, Artūras (Doctoral dissertation committee chair), Česnys, Antanas (Doctoral dissertation advisor), Šatkovskis, Eugenijus (Doctoral dissertation opponent).

Subjects/Keywords: Transport; Charge; Carriers; Krūvininkų; Pernaša; Sluoksniuose

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tolvaišienė, S. (2009). Transport of charge carriers in ultrathin films of manganese oxides. (Doctoral Dissertation). Vilnius Gediminas Technical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143224-76401 ;

Chicago Manual of Style (16^th Edition):

Tolvaišienė, Sonata. “Transport of charge carriers in ultrathin films of manganese oxides.” 2009. Doctoral Dissertation, Vilnius Gediminas Technical University. Accessed October 15, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143224-76401 ;.

MLA Handbook (7^th Edition):

Tolvaišienė, Sonata. “Transport of charge carriers in ultrathin films of manganese oxides.” 2009. Web. 15 Oct 2019.

Vancouver:

Tolvaišienė S. Transport of charge carriers in ultrathin films of manganese oxides. [Internet] [Doctoral dissertation]. Vilnius Gediminas Technical University; 2009. [cited 2019 Oct 15]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143224-76401 ;.

Council of Science Editors:

Tolvaišienė S. Transport of charge carriers in ultrathin films of manganese oxides. [Doctoral Dissertation]. Vilnius Gediminas Technical University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143224-76401 ;

Vilnius Gediminas Technical University

7. Tolvaišienė, Sonata. Krūvininkų pernaša ultraplonuosiuose mangano oksidų sluoksniuose.

Degree: Dissertation, Physics, 2009, Vilnius Gediminas Technical University

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143235-51205 ;

►

Disertacijoje nagrinėjami lantano manganitai, pasižymintys faziniu virsmu iš paramagnetinės į feromagnetinę būseną bei milžiniškos neigiamos magnetovar-žos efektu. Tiriami magnetovaržos ir jos anizotropijos efektai silpnuose (iki… (more)

▼

Disertacijoje nagrinėjami lantano manganitai, pasižymintys faziniu virsmu iš paramagnetinės į feromagnetinę būseną bei milžiniškos neigiamos magnetovar-žos efektu. Tiriami magnetovaržos ir jos anizotropijos efektai silpnuose (iki  0,5 T) magnetiniuose laukuose bei stiprių impulsinių srovių ir magnetinių laukų sukelti efektai plonuose epitaksiniuose manganitų sluoksniuose. Pateikiami pasiūlymai tyrimo rezultatus panaudoti kuriant magnetinio lauko jutiklius, spar-čiųjų elektrinių impulsų formuotuvus bei amplitudės moduliatorius. Tiriant sil-pnų magnetinių laukų poveikį ultraplonųjų La-Sr-MnO3 sluoksnių elektriniam laidumui, buvo nustatyta, kad magnetovaržos anizotropijos ženklas ir vertė šiuo-se laukuose priklauso nuo sluoksnio storio. Pateiktas modelis, paaiškinantis eks-perimentinius rezultatus, paremtas vidutinio lauko artiniu ir įskaitantis sluoksnio struktūros kitimą kintant jo storiui. Aptiktas ir ištirtas grįžtamasis termoelektrinis nestabilumas, išaiškintos šio reiškinio atsiradimo priežastys. Pasiūlytas ir ekspe-rimentiškai realizuotas naujas ns trukmės elektrinių impulsų amplitudės modulia-vimo išoriniu magnetiniu lauku būdas, naudojant epitaksinius La0,87Sr0,17MnO3 sluoksnius. Disertaciją sudaro reziumė lietuvių ir anglų kalbomis, įvadas, šeši skyriai, pagrindiniai rezultatai ir išvados, literatūros sąrašas, publikacijų disertacijos tema sąrašas. Įvadiniame skyriuje nagrinėjamas problemos aktualumas, formuluojamas darbo tikslas bei uždaviniai, aprašomas mokslinis... [toliau žr. visą tekstą]

The objective of this dissertation is to investigate lanthanum manganites, which exhibit colossal negative magnetoresistance and phase transitions from the paramagnetic state to the ferromagnetic state. The magnetoresistance and its ani-zotriopy of thin epitaxial manganite films at low (up to  0.5 T) magnetic fields, as well as effects induced by strong pulsed magnetic and electric fields were in-vestigated. It was demonstrated how it can be used in the development of magne-tic field sensors, short electric pulse forming devices and amplitude modulators. It was found that in the case of ultra-thin La-Sr-MnO3 films, the sign and value of the magnetoresistance anisotropy at low magnetic fields depends on the thickness of the films. An explanation of these results was proposed using the mean field approach and taking into consideration that the structure of the films changes with its thickness. A reversible thermoelectrical switching effect was discovered and investigated. A new method for nanosecond duration electrical pulses amplitude modulation by an external magnetic field using La0.87Sr0.17MnO3 films was suggested and experimentally verified. This dissertation consists of the abstracts in Lithuanian and English, intro-duction, six chapters, the main results and conclusions and list of literature. The introduction contains topicality and problem, the aim of the work, tasks, scientific novelty, practical value, approval of the results, statement to be de-fended and... [to full text]

Advisors/Committee Members: Balevičius, Saulius (Doctoral dissertation supervisor), Česnys, Antanas (Doctoral dissertation advisor), Jukna, Artūras (Doctoral dissertation committee chair), Šatkovskis, Eugenijus (Doctoral dissertation opponent).

Subjects/Keywords: Krūvininkų; Pernaša; Ultraplonuosiuose; Transport; Charge; Carriers

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tolvaišienė, S. (2009). Krūvininkų pernaša ultraplonuosiuose mangano oksidų sluoksniuose. (Doctoral Dissertation). Vilnius Gediminas Technical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143235-51205 ;

Chicago Manual of Style (16^th Edition):

Tolvaišienė, Sonata. “Krūvininkų pernaša ultraplonuosiuose mangano oksidų sluoksniuose.” 2009. Doctoral Dissertation, Vilnius Gediminas Technical University. Accessed October 15, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143235-51205 ;.

MLA Handbook (7^th Edition):

Tolvaišienė, Sonata. “Krūvininkų pernaša ultraplonuosiuose mangano oksidų sluoksniuose.” 2009. Web. 15 Oct 2019.

Vancouver:

Tolvaišienė S. Krūvininkų pernaša ultraplonuosiuose mangano oksidų sluoksniuose. [Internet] [Doctoral dissertation]. Vilnius Gediminas Technical University; 2009. [cited 2019 Oct 15]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143235-51205 ;.

Council of Science Editors:

Tolvaišienė S. Krūvininkų pernaša ultraplonuosiuose mangano oksidų sluoksniuose. [Doctoral Dissertation]. Vilnius Gediminas Technical University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090218_143235-51205 ;

Kansas State University

8. Ghimire, Govinda. Charge transport and molecular diffusion within self-assembled nanostructures.

Degree: PhD, Department of Chemistry, 2019, Kansas State University

URL: http://hdl.handle.net/2097/40046

► This dissertation describes charge transport behavior within redox-active block copolymer (BCP) microdomains and the diffusion behavior of charged dye molecules within self-assembled bolaamphiphilic organic nanotubes… (more)

▼ This dissertation describes charge transport behavior within redox-active block copolymer (BCP) microdomains and the diffusion behavior of charged dye molecules within self-assembled bolaamphiphilic organic nanotubes (ONTs) of different surface charge and inner diameters. In-depth understanding of the charge transport efficiency within redox-active microdomains in electrode-supported BCP thin films is crucial for their various electrochemical applications. Similarly, understanding of the diffusion behavior of differently charged dye molecules in ONTs will help design nanotubular materials better suited for drug-delivery and adsorbent applications. In the former study, polystyrene-block-poly(2-(acryloyloxy) ethylferrocenecarboxylate) (PS-b-PAEFc) of different PAEFc volume fractions (fPAEFc) was used as redox-active BCPs. The AFM images of PA-b-PAEFc thin films suggested that the morphology of PAEFc microdomains was dependent of the volume fraction. A series of electrochemical data revealed that thin films based on large fPAEFc, which were expected to yield lamellar and cylindrical microdomains, afforded redox-active microdomains that extended from the underlying electrode to the film–solution interface. In addition, charge transport efficiency, which was represented by apparent diffusion coefficient, within the ferrocene-containing microdomains was similar irrespective of fPAEFc, reflecting the similar concentration and dynamic properties of the redox-active moieties. Furthermore, the charge transport was observed in an acetonitrile solution but not in an ethanol solution, indicating that the thin films needed be swollen for redox-mediated charge propagation across the ferrocene moieties in the microdomains. Interestingly, the thin films rendered redox-active in the ethanol solution upon applying an oxidative potential in the acetonitrile solution, possibly due to the migration of electrolyte ions into the films, albeit with lower charge transport efficiency. The “activated” gold-supported PA-b-PAEFc thin films were applicable as electrochemically responsive heterogenous catalysts for Michael addition reaction between a -dicarbonyl compound and an enone in an ethanol solution. Importantly, the efficiency of the catalytic reaction could be regulated by the potential application, and its selectivity reflected the permeability of the reactants through the thin films. In the latter study, the diffusion behavior of differently charged fluorescent molecules within individual ONTs was systematically measured using imaging fluorescence correlation spectroscopy (imaging FCS) at different pH and ionic strength conditions. The ONTs with the inner diameters of 10 or 20 nm, which were self-assembled from asymmetrical bolaamphiphiles, had glucose moieties on their outer surfaces, and amine or carboxyl groups on their inner surfaces. Imaging FCS could be used to measure the diffusion of dye molecules that interacted with nanotube inner surfaces. Indeed, diffusion coefficients of dye molecules within the ONTs were much smaller… Advisors/Committee Members: Takashi Ito.

Subjects/Keywords: Charge transport; Nanostructures; Redox; Molecular diffusion

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ghimire, G. (2019). Charge transport and molecular diffusion within self-assembled nanostructures. (Doctoral Dissertation). Kansas State University. Retrieved from http://hdl.handle.net/2097/40046

Chicago Manual of Style (16^th Edition):

Ghimire, Govinda. “Charge transport and molecular diffusion within self-assembled nanostructures.” 2019. Doctoral Dissertation, Kansas State University. Accessed October 15, 2019. http://hdl.handle.net/2097/40046.

MLA Handbook (7^th Edition):

Ghimire, Govinda. “Charge transport and molecular diffusion within self-assembled nanostructures.” 2019. Web. 15 Oct 2019.

Vancouver:

Ghimire G. Charge transport and molecular diffusion within self-assembled nanostructures. [Internet] [Doctoral dissertation]. Kansas State University; 2019. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/2097/40046.

Council of Science Editors:

Ghimire G. Charge transport and molecular diffusion within self-assembled nanostructures. [Doctoral Dissertation]. Kansas State University; 2019. Available from: http://hdl.handle.net/2097/40046

RMIT University

9. Walker, K. Charge correlation and transport properties in one-dimensional arrays of tunnel junctions.

Degree: 2015, RMIT University

URL: http://researchbank.rmit.edu.au/view/rmit:161561

► In this thesis we present a mathematical model and numerical simulations of one-dimensional arrays of small tunnel junctions to investigate correlated charge transport and other… (more)

▼ In this thesis we present a mathematical model and numerical simulations of one-dimensional arrays of small tunnel junctions to investigate correlated charge transport and other transport properties. Our primary motivation for this research is the recent discrepancies between theoretical models and experimental observations in the literature. Several experimentally observed behaviours can not be explained or predicted by the orthodox theory of junction array physics, which has successfully and fully predicted and described charge transport in single tunnel junctions since the 1980s. These findings highlight the need for a complete theoretical framework for multi-junction systems. We consider linear and bilinear junction arrays in both the normal and superconducting transport regimes. We primarily focus on the correlated charge transport regime, which we find is optimal in the low current (voltage) limit. We initially simulate clean arrays and then investigate the effect of both the weak and maximal background charge disorder limits on correlated transport and the current-voltage characteristics. Disorder, most important at small bias voltages, impedes charge correlations and shifts threshold voltages. At high voltages we find very little difference across the disorder strengths. An intriguing behaviour of tunnel junction devices manifests when we apply a small offset voltage across the arrays. This voltage offset enforces different charge patterns within the array and as a result the current exhibits significant periodic modulation as a function of the offset. Through quantitative analysis, the specific charge patterns can be identified. Notwithstanding that the integrity of these patterns is largely compromised in the presence of disorder, the current continues to exhibit substantial periodic offset voltage dependence. In the superconducting regime we discuss the interplay between the different charge carriers and differences in the conduction and transport properties between the normal and superconducting limits. We simulate unexplained experimental observations by including charge disorder and sub-gap leakage into our model. This work contributes to the knowledge of these devices and the development of a microscopic junction array model which correctly and completely explains all experimental effects. Furthermore, this thesis demonstrates the rich physics contained within these relatively simple circuits and through several of the behaviours reported above, the possibility for even more new effects to be discovered.

Subjects/Keywords: Fields of Research; Electron transport; Superconductivity; Correlated charge transport; Single charge devices; Josephson effect

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Walker, K. (2015). Charge correlation and transport properties in one-dimensional arrays of tunnel junctions. (Thesis). RMIT University. Retrieved from http://researchbank.rmit.edu.au/view/rmit:161561

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Walker, K. “Charge correlation and transport properties in one-dimensional arrays of tunnel junctions.” 2015. Thesis, RMIT University. Accessed October 15, 2019. http://researchbank.rmit.edu.au/view/rmit:161561.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Walker, K. “Charge correlation and transport properties in one-dimensional arrays of tunnel junctions.” 2015. Web. 15 Oct 2019.

Vancouver:

Walker K. Charge correlation and transport properties in one-dimensional arrays of tunnel junctions. [Internet] [Thesis]. RMIT University; 2015. [cited 2019 Oct 15]. Available from: http://researchbank.rmit.edu.au/view/rmit:161561.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Walker K. Charge correlation and transport properties in one-dimensional arrays of tunnel junctions. [Thesis]. RMIT University; 2015. Available from: http://researchbank.rmit.edu.au/view/rmit:161561

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. Bobbara, Sanyasi. Effect of Encapsulation and Light-soak on Charge Transport Properties in Organic Semiconductor –based Diodes : Effet d'encapsulation et d'éclairement prolongé sur les propriétés de transport de charges dans les diodes semiconductrices organiques.

Degree: Docteur es, Physique, milieux dilués et optique fondamentale, 2017, Angers; Queen's University (Canada)

URL: http://www.theses.fr/2017ANGE0022

►

Les semiconducteurs organiques (SO) ont attiré une grande attention ces dernières années en raison de leur facilité de fabrication, de leurs modifications des propriétés optiques… (more)

▼

Les semiconducteurs organiques (SO) ont attiré une grande attention ces dernières années en raison de leur facilité de fabrication, de leurs modifications des propriétés optiques et électriques et de leur rentabilité. Ils forment la classe de matériaux les plus adaptés à l'électronique flexible et à la bioélectronique, en particulier en association avec des matériaux inorganiques / hybrides solubles en solution. Cependant, la mobilité des charges dans ces matériaux est fortement affectés par leur désordre structurel et énergétique introduit par les défauts qui "piègent" les transporteurs de charge. Selon l'emplacement physique des pièges et leur distribution en énergie, ils pourraient affecter de manière significative le transport de charge dans un dispositif. Le présent travail s'efforce de sonder l'interface et les états défectueux en masse dans des diodes à base de polymère. Au lieu de cela, une partie de l'étude implique de caractériser le système avec et sans encapsulation, en utilisant des techniques pour enregistrer le comportement de courant-tension à l'état stationnaire (IV), les transitoires d'extraction de charge par la tension augmentant linéairement (CELIV) et les courants transitoires d'injection en obscurité (DiTC), ainsi que la photoluminescence (PL) et l'électroluminescence (EL) des systèmes. Les mêmes caractéristiques ont été effectuées pour observer l'effet de pénétration de la lumière ultraviolet (UV) sur les systèmes. Tous les tests ont été effectués sur trois polymères différents, à savoir P3HT, MDMO:PPV et PCDTBT. La comparaison des dispositifs encapsulés et non encapsulés donne un aperçu des différences caractéristiques des mesurables lors de l'exposition à l'air et humidité. Les tests de pénétration lumineuse indiquent la modification de la fonction de travail de la cathode après une désorption d'oxygène assistée par UV sur l'interface polymère/cathode. Un effort simultané s'est traduit par une étude in situ de la dynamique de transport des charges dans les semi-conducteurs organiques sur une large gamme de temps à une échelle microscopique.

Organic semiconductors (OSs) have garnered a great attention in the recent years due to their ease of processibility, optical and electrical property-tunability, and to their cost-effectiveness. They form the class of materials most suitable for flexible electronics and bioelectronics, especially in association with solutionprocessable inorganic/hybrid materials. However, the charge mobility in these materials is strongly affected by their structural and energetic disorder introduced by the defects that ‘trap’ the charge carriers. Depending upon the physical location of the traps and their distribution in energy, they could significantly affect the charge transport in a device. The present work strives to probe the interface and bulk defect states in polymer-based diodes. In lieu of that, a part of the study involved characterizing the device with and without encapsulation, using techniques to record steady-state current-voltage (IV)behaviour,…

Advisors/Committee Members: Nunzi, Jean-Michel (thesis director), Barille, Regis (thesis director).

Subjects/Keywords: Transport de charges; Encapsulation; Organic solar cell; Charge transport; Encapsulation; 530

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bobbara, S. (2017). Effect of Encapsulation and Light-soak on Charge Transport Properties in Organic Semiconductor –based Diodes : Effet d'encapsulation et d'éclairement prolongé sur les propriétés de transport de charges dans les diodes semiconductrices organiques. (Doctoral Dissertation). Angers; Queen's University (Canada). Retrieved from http://www.theses.fr/2017ANGE0022

Chicago Manual of Style (16^th Edition):

Bobbara, Sanyasi. “Effect of Encapsulation and Light-soak on Charge Transport Properties in Organic Semiconductor –based Diodes : Effet d'encapsulation et d'éclairement prolongé sur les propriétés de transport de charges dans les diodes semiconductrices organiques.” 2017. Doctoral Dissertation, Angers; Queen's University (Canada). Accessed October 15, 2019. http://www.theses.fr/2017ANGE0022.

MLA Handbook (7^th Edition):

Bobbara, Sanyasi. “Effect of Encapsulation and Light-soak on Charge Transport Properties in Organic Semiconductor –based Diodes : Effet d'encapsulation et d'éclairement prolongé sur les propriétés de transport de charges dans les diodes semiconductrices organiques.” 2017. Web. 15 Oct 2019.

Vancouver:

Bobbara S. Effect of Encapsulation and Light-soak on Charge Transport Properties in Organic Semiconductor –based Diodes : Effet d'encapsulation et d'éclairement prolongé sur les propriétés de transport de charges dans les diodes semiconductrices organiques. [Internet] [Doctoral dissertation]. Angers; Queen's University (Canada); 2017. [cited 2019 Oct 15]. Available from: http://www.theses.fr/2017ANGE0022.

Council of Science Editors:

Bobbara S. Effect of Encapsulation and Light-soak on Charge Transport Properties in Organic Semiconductor –based Diodes : Effet d'encapsulation et d'éclairement prolongé sur les propriétés de transport de charges dans les diodes semiconductrices organiques. [Doctoral Dissertation]. Angers; Queen's University (Canada); 2017. Available from: http://www.theses.fr/2017ANGE0022

Oklahoma State University

11. Norouzzadeh, Payam. Charge Carrier and Phonon Transport in Nanostructured Thermoelectrics.

Degree: School of Materials Science & Engineering, 2012, Oklahoma State University

URL: http://hdl.handle.net/11244/7888

► There is currently no quantum mechanical transport model for charge (or phonon) transport in multiphase nano-crystalline structures. Due to absence of periodicity, one cannot apply… (more)

▼ There is currently no quantum mechanical transport model for charge (or phonon) transport in multiphase nano-crystalline structures. Due to absence of periodicity, one cannot apply any of the elegant theorems, such as Bloch's theorem, which are implicit in the basic theory of crystalline solids. Atomistic models such as Kubo and NEGF may assume an accurate knowledge of the interatomic potentials; however, calculations for real 3D random multi-phase systems require so large computational times that makes them practically impossible.In a multi-phase nano-crystalline material, grains and interfacial microstructures may have three distinct types as depicted in figure. In such a material, the physical processes in each individual grain no longer follow the well described classical continuum linear transport theory. Therefore, a proper model for coupled transport of charge carriers and phonons that takes into account the effect of their non-equilibrium energy distribution is highly desirable.Two new theories and associated codes based on Coherent Potential Approximation (CPA) one for electron transport and one for phonon transport are developed. The codes calculate the charge and phonon transport parameters in nanocomposite structures. These can be nano-crystalline (symmetric case) or the material with embedded nano-particles (dispersion case). CPA specifically considers multi-scattering effect that cannot be explained with other semi-classical methods such as Partial Wave or Fermi's golden rule. To our knowledge this is the first CPA code developed to study both charge and phonon transport in nanocomposite structures.The codes can be extend to different types of nano-crystalline materials taking into account the average grain size, as well as the grain size distribution, and volume fraction of the different constituents in the materials. This is a strong tool that can describe more complex systems such as nano-crystals with randomly oriented grains with predictive power for the properties of electrical and thermal properties of disordered nano-crystalline electronic materials. Advisors/Committee Members: Vashaee, Daryoosh (advisor), Krasinski, Jerzy S. (committee member), Acken, John Michael (committee member), Ede, Kenneth F. (committee member).

Subjects/Keywords: charge transport; coherent potential approximation; nanostructuring; phonon transport; thermoelectrics

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APA (6^th Edition):

Norouzzadeh, P. (2012). Charge Carrier and Phonon Transport in Nanostructured Thermoelectrics. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/7888

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Norouzzadeh, Payam. “Charge Carrier and Phonon Transport in Nanostructured Thermoelectrics.” 2012. Thesis, Oklahoma State University. Accessed October 15, 2019. http://hdl.handle.net/11244/7888.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Norouzzadeh, Payam. “Charge Carrier and Phonon Transport in Nanostructured Thermoelectrics.” 2012. Web. 15 Oct 2019.

Vancouver:

Norouzzadeh P. Charge Carrier and Phonon Transport in Nanostructured Thermoelectrics. [Internet] [Thesis]. Oklahoma State University; 2012. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/11244/7888.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Norouzzadeh P. Charge Carrier and Phonon Transport in Nanostructured Thermoelectrics. [Thesis]. Oklahoma State University; 2012. Available from: http://hdl.handle.net/11244/7888

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

12. Paradisi, Andrea. Ultra-high carrier modulation in two dimensions through space charge doping : graphene and zinc oxide : Modulation ultra-haute de charge en deux dimensions à travers le dopage par charge d'espace : graphène et oxide de zinc.

Degree: Docteur es, Physique, 2016, Université Pierre et Marie Curie – Paris VI

URL: http://www.theses.fr/2016PA066297

►

La modulation de la densité de charge est un aspect important de l'étude de les transitions de phase électroniques ainsi que des propriétés électroniques des… (more)

▼

La modulation de la densité de charge est un aspect important de l'étude de les transitions de phase électroniques ainsi que des propriétés électroniques des matériaux et il est à la base de plusieurs applications dans la micro-électronique. L'ajustement de la densité des porteurs de charge (dopage) peut être fait par voie chimique, en ajoutant des atomes étrangers au réseau cristallin du matériau ou électrostatiquement, en créant un accumulation de charge comme dans un Transistor é Effet de Champ. Cette dernier m ethode est réversible et particuliérement appropriée pour les matériaux bidimensionnels (2D) ou pour des couches ultra-minces. Le Dopage par Charge d'Espace est une nouvelle technique inventée et développée au cours de ce travail de thèse pour le dopage electrostatique de matériaux déposés sur la surface du verre. Une charge d'espace est créée à la surface en provoquant le mouvement des ions sodium présents dans le verre sous l'effet de la chaleur et d'un champ électrique extérieur. Cette espace de charge induit une accumulation de charge dans le matériau déposé sur la surface du verre, ce qui peut être supérieure à 10¹⁴/cm². Une caractérisation détaillée faite avec mesures de transport, effet Hall, mesures Raman et mesures de Microscopie a Force Atomique (AFM) montrent que le dopage est réversible, bipolaire et il ne provoque pas des modifications chimiques. Cette technique peut être appliquée a des grandes surfaces, comme il est montré pour le cas du graph ene CVD. Dans une deuxiéme partie le dopage par espace de charge est appliqué à des couches ultra-minces (< 40 nm) de ZnO_(1-x). Le résultat est un abaissement de la résistance par carré de 5 ordres de grandeur. Les mesures de magnéto-transport faites à basse température montrent que les électrons dop es sont confinés en deux dimensions. Une transition remarquable de la localisation faible à l'anti-localisation est observée en fonction du dopage et de la température et des conclusions sont tirées à propos des phénoménes de diffusion qui gouverne le transport électronique dans des diff erentes conditions dans ce matériau.

Carrier modulation is an important parameter in the study of the electronic phase transitions and the electronic properties of materials and at the basis for many applications in microelectronics. The tuning of charge carrier density (doping) can be achieved chemically, by adding foreign atoms to the crystal structure of the material or electrostatically, by inducing a charge accumulation like in a Field Eect Transistor device. The latter method is reversible and particularly indicated for use in two dimensional (2D) materials or ultra-thin films. Space Charge Doping is a new technique invented and developed during this thesis for the electrostatic doping of such materials deposited on a glass surface. A space charge is created at the surface by causing sodium ions contained in glass to drift under the Eect of heat and an external electric field. This space charge in turn induces a charge accumulation in the material deposited on…

Advisors/Committee Members: Shukla, Abhay (thesis director).

Subjects/Keywords: Ultra-Haut dopage; Graphène; Oxide de zinc; Verre; Magnéto-Transport; Charge d'éspace; Glass surface; Space charge; Magneto-transport; 530

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Paradisi, A. (2016). Ultra-high carrier modulation in two dimensions through space charge doping : graphene and zinc oxide : Modulation ultra-haute de charge en deux dimensions à travers le dopage par charge d'espace : graphène et oxide de zinc. (Doctoral Dissertation). Université Pierre et Marie Curie – Paris VI. Retrieved from http://www.theses.fr/2016PA066297

Chicago Manual of Style (16^th Edition):

Paradisi, Andrea. “Ultra-high carrier modulation in two dimensions through space charge doping : graphene and zinc oxide : Modulation ultra-haute de charge en deux dimensions à travers le dopage par charge d'espace : graphène et oxide de zinc.” 2016. Doctoral Dissertation, Université Pierre et Marie Curie – Paris VI. Accessed October 15, 2019. http://www.theses.fr/2016PA066297.

MLA Handbook (7^th Edition):

Paradisi, Andrea. “Ultra-high carrier modulation in two dimensions through space charge doping : graphene and zinc oxide : Modulation ultra-haute de charge en deux dimensions à travers le dopage par charge d'espace : graphène et oxide de zinc.” 2016. Web. 15 Oct 2019.

Vancouver:

Paradisi A. Ultra-high carrier modulation in two dimensions through space charge doping : graphene and zinc oxide : Modulation ultra-haute de charge en deux dimensions à travers le dopage par charge d'espace : graphène et oxide de zinc. [Internet] [Doctoral dissertation]. Université Pierre et Marie Curie – Paris VI; 2016. [cited 2019 Oct 15]. Available from: http://www.theses.fr/2016PA066297.

Council of Science Editors:

Paradisi A. Ultra-high carrier modulation in two dimensions through space charge doping : graphene and zinc oxide : Modulation ultra-haute de charge en deux dimensions à travers le dopage par charge d'espace : graphène et oxide de zinc. [Doctoral Dissertation]. Université Pierre et Marie Curie – Paris VI; 2016. Available from: http://www.theses.fr/2016PA066297

University of Minnesota

13. Ghosh, Soumen. Static and Dynamic Charge and Energy Transport in Organic Electronics.

Degree: PhD, Chemistry, 2018, University of Minnesota

URL: http://hdl.handle.net/11299/200186

► Organic electronic materials are a new generation of materials that have the potential to move our society to clean and renewable energy sources, but the… (more)

Subjects/Keywords: Charge transport; Density functional theory; Electronic structure methods; Energy transport; Organic elctronics; Real-time dynamics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ghosh, S. (2018). Static and Dynamic Charge and Energy Transport in Organic Electronics. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/200186

Chicago Manual of Style (16^th Edition):

Ghosh, Soumen. “Static and Dynamic Charge and Energy Transport in Organic Electronics.” 2018. Doctoral Dissertation, University of Minnesota. Accessed October 15, 2019. http://hdl.handle.net/11299/200186.

MLA Handbook (7^th Edition):

Ghosh, Soumen. “Static and Dynamic Charge and Energy Transport in Organic Electronics.” 2018. Web. 15 Oct 2019.

Vancouver:

Ghosh S. Static and Dynamic Charge and Energy Transport in Organic Electronics. [Internet] [Doctoral dissertation]. University of Minnesota; 2018. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/11299/200186.

Council of Science Editors:

Ghosh S. Static and Dynamic Charge and Energy Transport in Organic Electronics. [Doctoral Dissertation]. University of Minnesota; 2018. Available from: http://hdl.handle.net/11299/200186

University of Michigan

14. Kim, Gun Ho. Thermoelectric Transport in Organic Materials.

Degree: PhD, Mechanical Engineering, 2013, University of Michigan

URL: http://hdl.handle.net/2027.42/102350

► Organic materials are well-suited to certain applications due to their low cost, low weight, and mechanical flexibility, but are less desirable for other applications due… (more)

▼ Organic materials are well-suited to certain applications due to their low cost, low weight, and mechanical flexibility, but are less desirable for other applications due to poor conduction of electricity and heat. The contributions of my work focus on strategies to mitigate these limitations in current and emerging organic materials, developing techniques to improve charge carrier mobility in doped organic semiconductors (OSCs) and improve thermal conductivity in common commercial plastic materials. Understanding of charge carrier transport is a prerequisite to developing a good electrical conductor. In OSCs, charge carriers are historically assumed to be strongly localized, which bears heavily on their assumed mechanism of transport; however, the degree of localization in emerging high-conductivity OSCs has been the subject of intense study. My work develops a model that can be used with thermoelectric measurements to quantitatively determine the degree of carrier localization in an OSC, and applies this technique to high-conductivity polymers and iodine-doped pentacene films. The model also suggests a strategy to improve energy conversion efficiency in OSC-based thermoelectric materials by reducing dopant volume. This strategy was confirmed experimentally to vary all three thermoelectric parameters (Seebeck coefficient, electrical conductivity, and thermal conductivity) in a manner that increases thermoelectric efficiency, in sharp contrast to their trade-offs in common inorganic semiconductor based thermoelectric materials. This method led to 70% increase in the thermoelectric efficiency from the previous record for an OSC. Finally, I propose and study methods to increase inter-chain bonding in polymer mixtures as an efficient engineering route to improve their thermal conductivity. By controlling the mole fractions of components to favor (strong) hydrogen bonds over weaker van der Waals bonds, the thermal conductivities of mixtures of common commercial polymers are increased by an order of magnitude, reaching 1.72 W/mK, the highest value yet reported among non-crystalline polymer materials without the incorporation of fillers. Advisors/Committee Members: Pipe, Kevin Patrick (committee member), Shtein, Max (committee member), Sangi Reddy, Pramod (committee member), Kurabayashi, Katsuo (committee member), Kim, Jinsang (committee member).

Subjects/Keywords: Organic Materials; Thermoelectric Conversion Efficiency; Charge Carrier Transport; Thermal Transport; Materials Science and Engineering; Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kim, G. H. (2013). Thermoelectric Transport in Organic Materials. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/102350

Chicago Manual of Style (16^th Edition):

Kim, Gun Ho. “Thermoelectric Transport in Organic Materials.” 2013. Doctoral Dissertation, University of Michigan. Accessed October 15, 2019. http://hdl.handle.net/2027.42/102350.

MLA Handbook (7^th Edition):

Kim, Gun Ho. “Thermoelectric Transport in Organic Materials.” 2013. Web. 15 Oct 2019.

Vancouver:

Kim GH. Thermoelectric Transport in Organic Materials. [Internet] [Doctoral dissertation]. University of Michigan; 2013. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/2027.42/102350.

Council of Science Editors:

Kim GH. Thermoelectric Transport in Organic Materials. [Doctoral Dissertation]. University of Michigan; 2013. Available from: http://hdl.handle.net/2027.42/102350

The Ohio State University

15. Stepanov, Petr. Spin and Charge Transport in Monolayer and Trilayer Graphene in the Quantum Hall Regime.

Degree: PhD, Physics, 2018, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1532103607994675

► Graphene, a two-dimensional carbon honeycomb lattice, has generated immense interest within the condensed matter physics community due to its fascinating electrical, optical, and mechanical properties.… (more)

▼ Graphene, a two-dimensional carbon honeycomb lattice, has generated immense interest within the condensed matter physics community due to its fascinating electrical, optical, and mechanical properties. The differences in band structure of mono-, bi- and tri-layer graphene give rise to drastically different electronic ground state configurations and competing symmetries (such as spin, valley, orbital, and layer). Recent efforts have significantly improved electronic its charge carrier mobility and enabled the observation of a number of exciting phenomena in monolayer and few layer graphene. In this thesis we present an experimental study of spin transport through monolayer graphene antiferromagnet insulator (AFMI), and quantum Hall (QH) phases in multiple Dirac band trilayer graphene, which provide further insight into both single-particle and many-body physics in these exciting two-dimensional (2D) systems.These projects require samples of exceptional quality. To this end, I, together with Nathaniel Gillgren, developed a dry transfer technique (first pioneered by the Columbia group), in order to fabricate graphene devices encapsulated within hexagonal boron nitride (hBN) layers. Since hBN sheets are atomically flat and host very few trapped charges and defects, they are ideal substrates for graphene devices, which boost chargecarrier mobility as high as ˜ 10⁵. In my research these ultraclean devices enabled theresolution of symmetry-broken quantum Hall phases and fractional quantum Hall states, as well as the establishment of an antiferromagnetic insulator the affords long distance spin transport.In the first part of thesis, we focus on the observation of tunable symmetries of the integer and fractional quantum Hall (QH) states in ABA-stacked trilayer graphene, which hosts multiple Dirac bands. At finite doping and in the quantum Hall regime, we use transport measurements to map the Landau levels of hBN-encapsulated ABA-stacked trilayer graphene as a function of charge carrier density n, magnetic field B, and interlayer displacement field D. We observe the transitions among states with different spin, valley, orbital, and parity polarizations. This extremely rich pattern arises from crossings between Landau levels from different sub-bands, which reflects the evolving symmetries that are tunable in situ. Notable, we observe fractional QH (FQH) states at filling factors 2/3 and -11/3 at ¿ = 0. Unlike those in bilayer graphene, these FQH states are destabilized by a small interlayer potential that hybridizes the different Dirac bands.At the charge neutrality point (CNP), trilayer graphene displays a striking phase diagram. Here, we discover a new class of QH effect, the quantum parity Hall (QPH) effect, in which boundary channels are distinguished by even or odd parity under the system’s mirror reflection symmetry. Quantized conductance is first observed at low perpendicular magnetic field ¿2 at ¿xx = 4e2/h, confirming the presence of four edge channels that travel from source to drain. As ¿2 increases, the quantized… Advisors/Committee Members: Lau, Chun Ning (Advisor).

Subjects/Keywords: Physics; Condensed Matter Physics; Experiments; Charge transport, spin transport, monolayer graphene, trilayer graphene, graphene antiferromagnet

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Stepanov, P. (2018). Spin and Charge Transport in Monolayer and Trilayer Graphene in the Quantum Hall Regime. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1532103607994675

Chicago Manual of Style (16^th Edition):

Stepanov, Petr. “Spin and Charge Transport in Monolayer and Trilayer Graphene in the Quantum Hall Regime.” 2018. Doctoral Dissertation, The Ohio State University. Accessed October 15, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1532103607994675.

MLA Handbook (7^th Edition):

Stepanov, Petr. “Spin and Charge Transport in Monolayer and Trilayer Graphene in the Quantum Hall Regime.” 2018. Web. 15 Oct 2019.

Vancouver:

Stepanov P. Spin and Charge Transport in Monolayer and Trilayer Graphene in the Quantum Hall Regime. [Internet] [Doctoral dissertation]. The Ohio State University; 2018. [cited 2019 Oct 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1532103607994675.

Council of Science Editors:

Stepanov P. Spin and Charge Transport in Monolayer and Trilayer Graphene in the Quantum Hall Regime. [Doctoral Dissertation]. The Ohio State University; 2018. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1532103607994675

Indian Institute of Science

16. Sangeeth, Suchand C S. Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices.

Degree: 2012, Indian Institute of Science

URL: http://hdl.handle.net/2005/2279

► The Thesis reports charge transport studies on conducting polymers, polymer carbon nanotube composites and organic semiconductor devices. Conducting and semiconducting polymers consisting of π-conjugated chains… (more)

▼ The Thesis reports charge transport studies on conducting polymers, polymer carbon nanotube composites and organic semiconductor devices. Conducting and semiconducting polymers consisting of π-conjugated chains have attracted considerable attention as they combine the optoelectronic properties of semiconductors with mechanical properties and processing advantages of plastics. The chemical/electrochemical/photodoping of these semiconducting polymers can tune the Fermi levels and conductivity in a controlled way, and hence the properties of devices can be easily tailored to suit in several applications. Carbon nanotube (CNT) is another another novel promising material for electronic/optoelectronic applications. Lately there has been a great interest in developing composites of polymer and CNTs to utilize the advantages of both CNTs and polymers. The inclusion of CNTs in polymers improves the mechanical, electrical and thermal properties since the aspect ratio (ratio of length to diameter) is very large, as well its density is rather low. The Thesis consists of 6 chapters. First chapter is a brief introduction of general and transport properties of conducting polymers and polymer-carbon nanotube composites. In Chapter 2, the sample preparation and experimental techniques used in this work are discussed. The charge transport in poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS) is presented in Chapter 3. Chapter 4 focuses on the transport measurements in the polymer-CNT composite samples. Chapter 5 elaborates the ac and dc characterization of organic field-effect transistors (OFETs). And chapter 6 presents the conclusion and future directions of the work that has been presented in the Thesis. Chapter 1: In the scientific and technological revolution of the last few years, the study of high performance materials has been steadily increasing including the study of carbon-based materials. Conducting polymers have special properties that are interesting for this new technology. The charge transport in conjugated polymers is important to optimize the performance of devices. The discovery of CNTs with exceptional thermal, mechanical, optical, electrical and structural properties has facilitated the synthesis of new type of nanocomposites with very interesting properties. Nanocomposites represent a guest-host matrix consisting of easily processible functionalized conjugated polymer as host, incorporating CNTs as fillers with versatile electronic and magnetic properties, which provide a wide range of technological applications. To optimize their electrical properties it is essential to understand the charge transport mechanism in detail. Chapter 2: The multi-wall carbon nanotubes (MWNTs) grown by thermal chemical vapor deposition (CVD) are mixed with a 1:1 mixture of 98% H2SO4 and 70% HNO3 to produce sulfonic acid functionalized multi-wall carbon nanotubes (s-MWNTs). The s-MWNTs are dispersed in a solution of Nafion by ultrasonication and then cast on a glass substrate and slowly dried by moderate heating to… Advisors/Committee Members: Menon, Reghu.

Subjects/Keywords: Electrodynamics; Electric Charge Transport; Polymers - Conductivity; Conducting Polymers - Charge Transport; Organic Semiconductors - Charge Transport; Polymer-Carbon Nanotube Composties - Charge Transport; Organic Field-Effect Transistors OFETs); Nanocomposites; Carbon Nanotube (CNT); Multi-wall Carbon Nanotubes (MWNTs); PEDOT-PSS Thin Films; Pentacene Field-effect Transistor; Electrodynamics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sangeeth, S. C. S. (2012). Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices. (Thesis). Indian Institute of Science. Retrieved from http://hdl.handle.net/2005/2279

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sangeeth, Suchand C S. “Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices.” 2012. Thesis, Indian Institute of Science. Accessed October 15, 2019. http://hdl.handle.net/2005/2279.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sangeeth, Suchand C S. “Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices.” 2012. Web. 15 Oct 2019.

Vancouver:

Sangeeth SCS. Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices. [Internet] [Thesis]. Indian Institute of Science; 2012. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/2005/2279.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sangeeth SCS. Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices. [Thesis]. Indian Institute of Science; 2012. Available from: http://hdl.handle.net/2005/2279

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Akron

17. Aung, Pyie Phyo. Monte Carlo Simulations of charge Transport in Organic Semiconductors.

Degree: MS, Physics, 2014, University of Akron

URL: http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111

► Thin film organic semiconductors have applications in electronic devices such as tran- sistors, light emitting diodes, and organic solar cells. The performance of such devices… (more)

Subjects/Keywords: Physics; Polymers; Polymer Chemistry; Photovoltaic Organic Semiconductor Solar Cells Charge Transport

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APA (6^th Edition):

Aung, P. P. (2014). Monte Carlo Simulations of charge Transport in Organic Semiconductors. (Masters Thesis). University of Akron. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111

Chicago Manual of Style (16^th Edition):

Aung, Pyie Phyo. “Monte Carlo Simulations of charge Transport in Organic Semiconductors.” 2014. Masters Thesis, University of Akron. Accessed October 15, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111.

MLA Handbook (7^th Edition):

Aung, Pyie Phyo. “Monte Carlo Simulations of charge Transport in Organic Semiconductors.” 2014. Web. 15 Oct 2019.

Vancouver:

Aung PP. Monte Carlo Simulations of charge Transport in Organic Semiconductors. [Internet] [Masters thesis]. University of Akron; 2014. [cited 2019 Oct 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111.

Council of Science Editors:

Aung PP. Monte Carlo Simulations of charge Transport in Organic Semiconductors. [Masters Thesis]. University of Akron; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1418272111

Georgia Tech

18. Zuniga, Carlos A. Solution-processable charge transport layers for phosphorescent OLEDs.

Degree: PhD, Chemistry and Biochemistry, 2011, Georgia Tech

URL: http://hdl.handle.net/1853/43671

► The development of new charge transport materials for use in phosphorescent organic light-emitting diodes (OLEDs) remains an important area of research. In this thesis, several… (more)

Subjects/Keywords: Polymer; OLED; Phosphorescent; Charge transport; Ambipolar; Crosslinking; Phosphorescence; Organic compounds

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zuniga, C. A. (2011). Solution-processable charge transport layers for phosphorescent OLEDs. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/43671

Chicago Manual of Style (16^th Edition):

Zuniga, Carlos A. “Solution-processable charge transport layers for phosphorescent OLEDs.” 2011. Doctoral Dissertation, Georgia Tech. Accessed October 15, 2019. http://hdl.handle.net/1853/43671.

MLA Handbook (7^th Edition):

Zuniga, Carlos A. “Solution-processable charge transport layers for phosphorescent OLEDs.” 2011. Web. 15 Oct 2019.

Vancouver:

Zuniga CA. Solution-processable charge transport layers for phosphorescent OLEDs. [Internet] [Doctoral dissertation]. Georgia Tech; 2011. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/1853/43671.

Council of Science Editors:

Zuniga CA. Solution-processable charge transport layers for phosphorescent OLEDs. [Doctoral Dissertation]. Georgia Tech; 2011. Available from: http://hdl.handle.net/1853/43671

Durham University

19. Devasagayam, Peter. Experimental investigations into charge and spin carriers in polyaniline.

Degree: PhD, 1998, Durham University

URL: http://etheses.dur.ac.uk/4745/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266451

► Conductivity and electron spin resonance measurements have been performed on solution doped polyaniline (PANi). It is proposed that both camphor-sulphonic acid (CSA) and 2-acrylamido-2-methyl-l-propanesulphonic acid… (more)

▼ Conductivity and electron spin resonance measurements have been performed on solution doped polyaniline (PANi). It is proposed that both camphor-sulphonic acid (CSA) and 2-acrylamido-2-methyl-l-propanesulphonic acid (AMPSA) doped PANi can be described by the same model. It is suggested that the polyaniline materials are composed of differently ordered layers, a highly ordered region forming the core of the crystallites. The core of the crystallites are believed to be encapsulated within a semi- ordered region, with the crystallites themselves being dispersed in an amorphous polymer matrix. The conductivity measurements and ESR results described in this work support the proposal that within the highly ordered region of doped polyaniline crystallites, a polaronic lattice exists. The polaronic lattice facilitates "free" carriers which are responsible for "metallic" conduction within the crystallites. Encapsulating the polaronic lattice is a semi-ordered region in which (partially) mobile polarons (and possibly bipolarons) are present. The highly conductive crystallites are randomly dispersed in a less conductive polymer matrix. Charge transport within this heterogeneous system is well described by a heterogeneous metal - fluctuation induced tunnelling (FIT) model. The differences in the temperature dependent conductivities of the PANi-CSA and PANi-AMPSA materials are attributed to the systems having layers of different relative sizes (in the above model). AMPSA doped polyaniline films had a maximum room temperature conductivity of ~100 Scm(^-1). This material also showed potential for use as an electrode layer in polymer LEDs, to replace ITO coated glass. The conductivity of PANi-AMPSA was measured to be 50 ± 10 Scm(^-1) at thickness' of ~30nm. Layers of this thickness provide >90% optical transmission between 450 and 675 nm (most of the visible spectrum). Faraday rotation measurements have shown that the recently reported large Faraday rotation of polyaniline can not be reproduced. The limited results of the Faraday rotation experiments described in this work provide support for the theory that charge carriers in polyaniline have an effective mass of at least 100 times that of a free electron. It has also been shown that the claims of a polyaniline derivative (namely the Marcoussis polymer) being an entirely organic ferromagnet are unsubstantiated, despite intense investigation.

Subjects/Keywords: 530.41; Conductive polymer; Charge transport

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Devasagayam, P. (1998). Experimental investigations into charge and spin carriers in polyaniline. (Doctoral Dissertation). Durham University. Retrieved from http://etheses.dur.ac.uk/4745/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266451

Chicago Manual of Style (16^th Edition):

Devasagayam, Peter. “Experimental investigations into charge and spin carriers in polyaniline.” 1998. Doctoral Dissertation, Durham University. Accessed October 15, 2019. http://etheses.dur.ac.uk/4745/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266451.

MLA Handbook (7^th Edition):

Devasagayam, Peter. “Experimental investigations into charge and spin carriers in polyaniline.” 1998. Web. 15 Oct 2019.

Vancouver:

Devasagayam P. Experimental investigations into charge and spin carriers in polyaniline. [Internet] [Doctoral dissertation]. Durham University; 1998. [cited 2019 Oct 15]. Available from: http://etheses.dur.ac.uk/4745/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266451.

Council of Science Editors:

Devasagayam P. Experimental investigations into charge and spin carriers in polyaniline. [Doctoral Dissertation]. Durham University; 1998. Available from: http://etheses.dur.ac.uk/4745/ ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266451

Penn State University

20. Cao, Yanyan. SYNTHESIS AND INTEGRATION OF CONJUGATED POLYMER NANOSTRUCTURES FOR SENSING AND OTHER APPLICATIONS.

Degree: PhD, Chemistry, 2008, Penn State University

URL: https://etda.libraries.psu.edu/catalog/8204

► Miscellaneous conducting polymer nanostructures have been investigated for their potential applications in sensors, energy storage devices and artificial motors. One-dimensional nanowires and nanotubes were synthesized… (more)

Subjects/Keywords: charge transport; conducting polymer; nanopartical integration; sensor; nanowires

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cao, Y. (2008). SYNTHESIS AND INTEGRATION OF CONJUGATED POLYMER NANOSTRUCTURES FOR SENSING AND OTHER APPLICATIONS. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/8204

Chicago Manual of Style (16^th Edition):

Cao, Yanyan. “SYNTHESIS AND INTEGRATION OF CONJUGATED POLYMER NANOSTRUCTURES FOR SENSING AND OTHER APPLICATIONS.” 2008. Doctoral Dissertation, Penn State University. Accessed October 15, 2019. https://etda.libraries.psu.edu/catalog/8204.

MLA Handbook (7^th Edition):

Cao, Yanyan. “SYNTHESIS AND INTEGRATION OF CONJUGATED POLYMER NANOSTRUCTURES FOR SENSING AND OTHER APPLICATIONS.” 2008. Web. 15 Oct 2019.

Vancouver:

Cao Y. SYNTHESIS AND INTEGRATION OF CONJUGATED POLYMER NANOSTRUCTURES FOR SENSING AND OTHER APPLICATIONS. [Internet] [Doctoral dissertation]. Penn State University; 2008. [cited 2019 Oct 15]. Available from: https://etda.libraries.psu.edu/catalog/8204.

Council of Science Editors:

Cao Y. SYNTHESIS AND INTEGRATION OF CONJUGATED POLYMER NANOSTRUCTURES FOR SENSING AND OTHER APPLICATIONS. [Doctoral Dissertation]. Penn State University; 2008. Available from: https://etda.libraries.psu.edu/catalog/8204

Indian Institute of Science

21. Sangeeth, Suchand C S. Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices.

Degree: 2012, Indian Institute of Science

URL: http://etd.iisc.ernet.in/handle/2005/2279 ; http://etd.ncsi.iisc.ernet.in/abstracts/2934/G25117-Abs.pdf

► The Thesis reports charge transport studies on conducting polymers, polymer carbon nanotube composites and organic semiconductor devices. Conducting and semiconducting polymers consisting of π-conjugated chains… (more)

▼ The Thesis reports charge transport studies on conducting polymers, polymer carbon nanotube composites and organic semiconductor devices. Conducting and semiconducting polymers consisting of π-conjugated chains have attracted considerable attention as they combine the optoelectronic properties of semiconductors with mechanical properties and processing advantages of plastics. The chemical/electrochemical/photodoping of these semiconducting polymers can tune the Fermi levels and conductivity in a controlled way, and hence the properties of devices can be easily tailored to suit in several applications. Carbon nanotube (CNT) is another another novel promising material for electronic/optoelectronic applications. Lately there has been a great interest in developing composites of polymer and CNTs to utilize the advantages of both CNTs and polymers. The inclusion of CNTs in polymers improves the mechanical, electrical and thermal properties since the aspect ratio (ratio of length to diameter) is very large, as well its density is rather low. The Thesis consists of 6 chapters. First chapter is a brief introduction of general and transport properties of conducting polymers and polymer-carbon nanotube composites. In Chapter 2, the sample preparation and experimental techniques used in this work are discussed. The charge transport in poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS) is presented in Chapter 3. Chapter 4 focuses on the transport measurements in the polymer-CNT composite samples. Chapter 5 elaborates the ac and dc characterization of organic field-effect transistors (OFETs). And chapter 6 presents the conclusion and future directions of the work that has been presented in the Thesis. Chapter 1: In the scientific and technological revolution of the last few years, the study of high performance materials has been steadily increasing including the study of carbon-based materials. Conducting polymers have special properties that are interesting for this new technology. The charge transport in conjugated polymers is important to optimize the performance of devices. The discovery of CNTs with exceptional thermal, mechanical, optical, electrical and structural properties has facilitated the synthesis of new type of nanocomposites with very interesting properties. Nanocomposites represent a guest-host matrix consisting of easily processible functionalized conjugated polymer as host, incorporating CNTs as fillers with versatile electronic and magnetic properties, which provide a wide range of technological applications. To optimize their electrical properties it is essential to understand the charge transport mechanism in detail. Chapter 2: The multi-wall carbon nanotubes (MWNTs) grown by thermal chemical vapor deposition (CVD) are mixed with a 1:1 mixture of 98% H2SO4 and 70% HNO3 to produce sulfonic acid functionalized multi-wall carbon nanotubes (s-MWNTs). The s-MWNTs are dispersed in a solution of Nafion by ultrasonication and then cast on a glass substrate and slowly dried by moderate heating to… Advisors/Committee Members: Menon, Reghu.

Subjects/Keywords: Electrodynamics; Electric Charge Transport; Polymers - Conductivity; Conducting Polymers - Charge Transport; Organic Semiconductors - Charge Transport; Polymer-Carbon Nanotube Composties - Charge Transport; Organic Field-Effect Transistors OFETs); Nanocomposites; Carbon Nanotube (CNT); Multi-wall Carbon Nanotubes (MWNTs); PEDOT-PSS Thin Films; Pentacene Field-effect Transistor; Electrodynamics

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sangeeth, S. C. S. (2012). Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices. (Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ernet.in/handle/2005/2279 ; http://etd.ncsi.iisc.ernet.in/abstracts/2934/G25117-Abs.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sangeeth, Suchand C S. “Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices.” 2012. Thesis, Indian Institute of Science. Accessed October 15, 2019. http://etd.iisc.ernet.in/handle/2005/2279 ; http://etd.ncsi.iisc.ernet.in/abstracts/2934/G25117-Abs.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sangeeth, Suchand C S. “Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices.” 2012. Web. 15 Oct 2019.

Vancouver:

Sangeeth SCS. Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices. [Internet] [Thesis]. Indian Institute of Science; 2012. [cited 2019 Oct 15]. Available from: http://etd.iisc.ernet.in/handle/2005/2279 ; http://etd.ncsi.iisc.ernet.in/abstracts/2934/G25117-Abs.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sangeeth SCS. Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices. [Thesis]. Indian Institute of Science; 2012. Available from: http://etd.iisc.ernet.in/handle/2005/2279 ; http://etd.ncsi.iisc.ernet.in/abstracts/2934/G25117-Abs.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Irvine

22. Mazaheripour, Amir. Length- and Sequence-Controlled Organic Semiconductors.

Degree: Materials Science and Engineering, 2016, University of California – Irvine

URL: http://www.escholarship.org/uc/item/3nr5c56x

► Organic semiconductors have shown promise not only as alternative materials for silicon- based devices, but also as a gateway to a new paradigm of printable,… (more)

Subjects/Keywords: Materials Science; Nanotechnology; Physics; charge transport; nanomaterials; organic electronics; organic semiconductors

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APA (6^th Edition):

Mazaheripour, A. (2016). Length- and Sequence-Controlled Organic Semiconductors. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/3nr5c56x

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mazaheripour, Amir. “Length- and Sequence-Controlled Organic Semiconductors.” 2016. Thesis, University of California – Irvine. Accessed October 15, 2019. http://www.escholarship.org/uc/item/3nr5c56x.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mazaheripour, Amir. “Length- and Sequence-Controlled Organic Semiconductors.” 2016. Web. 15 Oct 2019.

Vancouver:

Mazaheripour A. Length- and Sequence-Controlled Organic Semiconductors. [Internet] [Thesis]. University of California – Irvine; 2016. [cited 2019 Oct 15]. Available from: http://www.escholarship.org/uc/item/3nr5c56x.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mazaheripour A. Length- and Sequence-Controlled Organic Semiconductors. [Thesis]. University of California – Irvine; 2016. Available from: http://www.escholarship.org/uc/item/3nr5c56x

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Berkeley

23. Phipps, Arran Thomas James. Ionization Collection in Detectors of the Cryogenic Dark Matter Search.

Degree: Physics, 2016, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/53t6s5pw

► Determining the composition of dark matter is at the forefront of modern scientific research. There is compelling evidence for the existence of vast quantities of… (more)

▼ Determining the composition of dark matter is at the forefront of modern scientific research. There is compelling evidence for the existence of vast quantities of dark matter throughout the universe, however it has so-far eluded all direct detection efforts and its identity remains a mystery. Weakly interacting massive particles (WIMPs) are a favored dark matter candidate and have been the primary focus of direct detection for several decades. The Cryogenic Dark Matter Search (CDMS) has developed the Z-dependent Ionization and Phonon (ZIP) detector to search for such particles. Typically made from germanium, these detectors are capable of distinguishing between electromagnetic background and a putative WIMP signal through the simultaneous measurement of ionization and phonons produced by scattering events. CDMS has operated several arrays of these detectors at the Soudan Underground Laboratory (Soudan, MN, USA) resulting in many competitive (often world-leading) WIMP exclusion limits. This dissertation focuses on ionization collection in these detectors under the sub-Kelvin, low electric field, and high crystal purity conditions unique to CDMS. The design and performance of a fully cryogenic HEMT-based amplifier capable of achieving the SuperCDMS SNOLAB ionization energy resolution goal of 100 eVee is presented. The experimental apparatus which has been used to record electron and hole properties under CDMS conditions is described. Measurements of charge transport, trapping, and impact ionization as a function of electric field in two CDMS detectors are shown, and the ionization collection efficiency is determined. The data is used to predict the error in the nuclear recoil energy scale under both CDMSlite and iZIP operating modes. A two species, two state model is developed to describe how ionization collection and space charge generation in CDMS detectors are controlled by the presence of ``overcharged'' D^- donor and A⁺ acceptor impurity states. The thermal stability of these states is exclusive to sub-Kelvin operation, explaining why ionization collection in CDMS detectors differs from similar semiconductor detectors operating at higher temperature. This work represents a solid foundation for the understanding ionization collection in CDMS detectors.

Subjects/Keywords: Physics; charge transport; dark matter; hemt amplifier; overcharged states

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APA (6^th Edition):

Phipps, A. T. J. (2016). Ionization Collection in Detectors of the Cryogenic Dark Matter Search. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/53t6s5pw

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Phipps, Arran Thomas James. “Ionization Collection in Detectors of the Cryogenic Dark Matter Search.” 2016. Thesis, University of California – Berkeley. Accessed October 15, 2019. http://www.escholarship.org/uc/item/53t6s5pw.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Phipps, Arran Thomas James. “Ionization Collection in Detectors of the Cryogenic Dark Matter Search.” 2016. Web. 15 Oct 2019.

Vancouver:

Phipps ATJ. Ionization Collection in Detectors of the Cryogenic Dark Matter Search. [Internet] [Thesis]. University of California – Berkeley; 2016. [cited 2019 Oct 15]. Available from: http://www.escholarship.org/uc/item/53t6s5pw.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Phipps ATJ. Ionization Collection in Detectors of the Cryogenic Dark Matter Search. [Thesis]. University of California – Berkeley; 2016. Available from: http://www.escholarship.org/uc/item/53t6s5pw

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Berkeley

24. Wiers, Brian Michael. Charge Transport In Metal-Organic Frameworks.

Degree: Chemistry, 2015, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/8jh064hp

► This dissertation documents efforts to synthesize and measure ionically and electronically conductive porous, three-dimensional metal-organic frameworks. Chapter 1 introduces concepts of conductivity, mixed-valency, measurement techniques… (more)

Subjects/Keywords: Chemistry; charge transport; conductivity; field effect transistors; Metal-organic frameworks

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APA (6^th Edition):

Wiers, B. M. (2015). Charge Transport In Metal-Organic Frameworks. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/8jh064hp

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wiers, Brian Michael. “Charge Transport In Metal-Organic Frameworks.” 2015. Thesis, University of California – Berkeley. Accessed October 15, 2019. http://www.escholarship.org/uc/item/8jh064hp.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wiers, Brian Michael. “Charge Transport In Metal-Organic Frameworks.” 2015. Web. 15 Oct 2019.

Vancouver:

Wiers BM. Charge Transport In Metal-Organic Frameworks. [Internet] [Thesis]. University of California – Berkeley; 2015. [cited 2019 Oct 15]. Available from: http://www.escholarship.org/uc/item/8jh064hp.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wiers BM. Charge Transport In Metal-Organic Frameworks. [Thesis]. University of California – Berkeley; 2015. Available from: http://www.escholarship.org/uc/item/8jh064hp

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Riverside

25. Pi, Keyu. Electronic and Spintronic Properties of Graphene.

Degree: Physics, 2010, University of California – Riverside

URL: http://www.escholarship.org/uc/item/6xf233bh

► In this thesis, I summarize our studies investigating the electronic properties and spintronic properties of transition metal doped graphene over the last six years. In… (more)

Subjects/Keywords: Physics, Condensed Matter; Charge scattering; Graphene; Semiconductor; Spin; Spintronic; transport

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APA (6^th Edition):

Pi, K. (2010). Electronic and Spintronic Properties of Graphene. (Thesis). University of California – Riverside. Retrieved from http://www.escholarship.org/uc/item/6xf233bh

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pi, Keyu. “Electronic and Spintronic Properties of Graphene.” 2010. Thesis, University of California – Riverside. Accessed October 15, 2019. http://www.escholarship.org/uc/item/6xf233bh.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pi, Keyu. “Electronic and Spintronic Properties of Graphene.” 2010. Web. 15 Oct 2019.

Vancouver:

Pi K. Electronic and Spintronic Properties of Graphene. [Internet] [Thesis]. University of California – Riverside; 2010. [cited 2019 Oct 15]. Available from: http://www.escholarship.org/uc/item/6xf233bh.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pi K. Electronic and Spintronic Properties of Graphene. [Thesis]. University of California – Riverside; 2010. Available from: http://www.escholarship.org/uc/item/6xf233bh

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Tennessee – Knoxville

26. Hamm, Daniel Shane. Development and Characterization of Lithium Indium Diselenide for Neutron Detection and Imaging Applications.

Degree: 2018, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_graddiss/4892

► Lithium indium diselenide [LISe] is under development as a single crystal semiconductor detector for neutron detection applications. Enriched in lithium-6, a neutron sensitive isotope, this… (more)

▼ Lithium indium diselenide [LISe] is under development as a single crystal semiconductor detector for neutron detection applications. Enriched in lithium-6, a neutron sensitive isotope, this wide-band gap semiconductor possesses the inherent neutron-gamma discrimination afforded by the thermal neutron capture reaction energy while providing distinct efficiency advantages over lithiated conversion layer detectors. The overarching theme of this work is to characterize the fundamental properties of this material to optimize its performance in neutron detection applications. The work presented here includes the identification of a suitable metallurgical contact for advanced detector fabrication, fundamental electronic property characterization, and proof-of-principle fast neutron imaging performance. Candidate contact materials were deposited through radio frequency magnetron sputtering. The primary metrics used to identify a robust contact were adhesion to the LISe surface and current voltage characteristics. Among the numerous contacts investigated, indium demonstrated the best adhesion properties. Its viability was demonstrated through the fabrication of a pixelated thermal neutron imaging detector (LTNI). Charge generation, transport, and trapping properties were investigated with emphasis on the stability of these properties post-operation in high thermal neutron flux fields. Neutron and alpha spectroscopy, photoinduced current transient spectroscopy, Raman spectroscopy, trap-filled limited voltage, and photoconductivity measurements were used to probe the charge transport and trapping mechanisms. Moderate transport properties were identified with respect to comparable technologies. Defect studies demonstrated that the type and density of defects strongly influenced performance of the detector. Encouraged by the performance of LTNI, an imaging detector was fabricated by coupling a LISe crystal to a 256 x 256 channel Timepix Application Specific Integrated Circuit to maximize spatial resolution. The fast neutron spatial resolution for 9MeV [electron-Volts] neutrons was investigated via a knife edge experiment. The measured efficiency was in agreement with the Evaluated Nuclear Data File cross-section database. The ultimate spatial resolution of the system was determined as 1.55 millimeters via the 10-90% decrease in contrast of the one-dimensional edge spread function. In conclusion, this material has been shown to exhibit suitable properties warranting further development for high efficiency slow neutron applications guided by the results of this work.

Subjects/Keywords: neutron detection; neutron radiography; 6LiInSe2; semiconductor radiation detector; charge carrier transport

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APA (6^th Edition):

Hamm, D. S. (2018). Development and Characterization of Lithium Indium Diselenide for Neutron Detection and Imaging Applications. (Doctoral Dissertation). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_graddiss/4892

Chicago Manual of Style (16^th Edition):

Hamm, Daniel Shane. “Development and Characterization of Lithium Indium Diselenide for Neutron Detection and Imaging Applications.” 2018. Doctoral Dissertation, University of Tennessee – Knoxville. Accessed October 15, 2019. https://trace.tennessee.edu/utk_graddiss/4892.

MLA Handbook (7^th Edition):

Hamm, Daniel Shane. “Development and Characterization of Lithium Indium Diselenide for Neutron Detection and Imaging Applications.” 2018. Web. 15 Oct 2019.

Vancouver:

Hamm DS. Development and Characterization of Lithium Indium Diselenide for Neutron Detection and Imaging Applications. [Internet] [Doctoral dissertation]. University of Tennessee – Knoxville; 2018. [cited 2019 Oct 15]. Available from: https://trace.tennessee.edu/utk_graddiss/4892.

Council of Science Editors:

Hamm DS. Development and Characterization of Lithium Indium Diselenide for Neutron Detection and Imaging Applications. [Doctoral Dissertation]. University of Tennessee – Knoxville; 2018. Available from: https://trace.tennessee.edu/utk_graddiss/4892

University of Exeter

27. Bandhu, Lokeshwar. Acoustoelectric transport in graphene.

Degree: PhD, 2015, University of Exeter

URL: http://hdl.handle.net/10871/18578

► The acoustoelectric effect in graphene is studied in a graphene/lithium niobate hybrid system, which was prepared by transferring large area single-layer graphene grown on copper… (more)

Subjects/Keywords: 530.4; Surface acoustic waves; graphene; acoustoelectric current; phase shifters; charge transport

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APA (6^th Edition):

Bandhu, L. (2015). Acoustoelectric transport in graphene. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/18578

Chicago Manual of Style (16^th Edition):

Bandhu, Lokeshwar. “Acoustoelectric transport in graphene.” 2015. Doctoral Dissertation, University of Exeter. Accessed October 15, 2019. http://hdl.handle.net/10871/18578.

MLA Handbook (7^th Edition):

Bandhu, Lokeshwar. “Acoustoelectric transport in graphene.” 2015. Web. 15 Oct 2019.

Vancouver:

Bandhu L. Acoustoelectric transport in graphene. [Internet] [Doctoral dissertation]. University of Exeter; 2015. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/10871/18578.

Council of Science Editors:

Bandhu L. Acoustoelectric transport in graphene. [Doctoral Dissertation]. University of Exeter; 2015. Available from: http://hdl.handle.net/10871/18578

Universitat de Valencia

28. Möller, Michael. Optical Properties of III-V Nanowires and Their Application for Charge Transport and Single-Photon Emission .

Degree: 2012, Universitat de Valencia

URL: http://hdl.handle.net/10550/24432

► This work covers the optical characterization of III-V semiconductor nanowires and their application for charge transport and for single-photon emission. InAs nanowires have been investigated… (more)

▼ This work covers the optical characterization of III-V semiconductor nanowires and their application for charge transport and for single-photon emission. InAs nanowires have been investigated by Raman scattering and PL spectroscopy. The possibility to grow nanowires with a crystal structure different from its bulk counterpart has aroused a lot of interest in their optical and electronic properties. Here, the optical phonon modes of wurtzite InAs nanowires have been studied by polarized Raman scattering. For the first time, Raman measurements on a single InAs nanowire have revealed the A1(TO) and E2h optical phonon modes of the wurtzite structure. Additional resonant Raman scattering experiments have shown that the electronic E1 transition in the wurtzite structure (close to the A point along the [0001] direction) is approximately 100 meV smaller than that for the zincblende phase (near the L point along the [111] direction). PL measurements of InAs ensembles have shown that the band gap of wurtzite InAs nanowires is substantially larger than the zincblende bulk band gap (0.415 eV) and a lower bound for the wurtzite gap has been estimated (0.458 eV). The measurements are in good agreement with available theoretical studies and close to experimental works. However, to the authors knowledge no band gap value on pure wurtzite nanowires has been published so far. In order to demonstrate the potential of nanowires in optoelectronic devices, GaAs/AlGaAs core/shell nanowires have been used for the acoustic transport of photoexcited carriers along the nanowire axis. In contrast to InAs, the advantages of this highly investigated GaAs/AlGaAs nanowires are the optical emission in the near infrared region, where optical detection is more efficient, and the high PL emission efficiency. The acoustic transport has been realized by surface acoustic waves (SAWs). These waves, also known as elastic surface waves, were first described theoretically by Lord Rayleigh in 1885. A particular type of these SAWs is the Rayleigh wave, named after his discoverer, which has been applied in this work. Rayleigh SAWs are localized near the surface and consist of the superposition of a longitudinal acoustic mode polarized parallel to the propagation direction and a transversal mode polarized perpendicular to the surface. This leads to alternating regions of tensile and compressive strain along the propagation direction. Due to the strain and its corresponding piezoelectric potential, a dynamic type-II modulation of the electronic band edges is imposed that can be used to transport carriers at the velocity of sound in quantum well structures. These SAWs have been applied to GaAs/AlGaAs core/shell nanowires transferred to a LiNbO3 substrate in order to transport photoexcited carriers along the nanowire axis to a second location, leading to remote emission of sub-nanosecond light pulses synchronized with the SAW phase. The high-frequency contactless manipulation of carriers by SAWs opens new perspectives for applications of nanowires in… Advisors/Committee Members: Morais de Lima, Mauricio, Jr (advisor).

Subjects/Keywords: nanowires; photoluminescence; InAs; GaAs; Raman; SAW; surface acoustic waves; charge transport

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Möller, M. (2012). Optical Properties of III-V Nanowires and Their Application for Charge Transport and Single-Photon Emission . (Doctoral Dissertation). Universitat de Valencia. Retrieved from http://hdl.handle.net/10550/24432

Chicago Manual of Style (16^th Edition):

Möller, Michael. “Optical Properties of III-V Nanowires and Their Application for Charge Transport and Single-Photon Emission .” 2012. Doctoral Dissertation, Universitat de Valencia. Accessed October 15, 2019. http://hdl.handle.net/10550/24432.

MLA Handbook (7^th Edition):

Möller, Michael. “Optical Properties of III-V Nanowires and Their Application for Charge Transport and Single-Photon Emission .” 2012. Web. 15 Oct 2019.

Vancouver:

Möller M. Optical Properties of III-V Nanowires and Their Application for Charge Transport and Single-Photon Emission . [Internet] [Doctoral dissertation]. Universitat de Valencia; 2012. [cited 2019 Oct 15]. Available from: http://hdl.handle.net/10550/24432.

Council of Science Editors:

Möller M. Optical Properties of III-V Nanowires and Their Application for Charge Transport and Single-Photon Emission . [Doctoral Dissertation]. Universitat de Valencia; 2012. Available from: http://hdl.handle.net/10550/24432

Delft University of Technology

29. Prins, P. Charge transport along molecular wires.

Degree: 2007, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015

► Imagine plastic electronics ... Consumer products such as mobile phones, mp3 players and palmtop computers that do not break when you accidentally drop them, with… (more)

Subjects/Keywords: trmc; charge transport; conjugated polymers

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APA (6^th Edition):

Prins, P. (2007). Charge transport along molecular wires. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015

Chicago Manual of Style (16^th Edition):

Prins, P. “Charge transport along molecular wires.” 2007. Doctoral Dissertation, Delft University of Technology. Accessed October 15, 2019. http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015.

MLA Handbook (7^th Edition):

Prins, P. “Charge transport along molecular wires.” 2007. Web. 15 Oct 2019.

Vancouver:

Prins P. Charge transport along molecular wires. [Internet] [Doctoral dissertation]. Delft University of Technology; 2007. [cited 2019 Oct 15]. Available from: http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015.

Council of Science Editors:

Prins P. Charge transport along molecular wires. [Doctoral Dissertation]. Delft University of Technology; 2007. Available from: http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; urn:NBN:nl:ui:24-uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015 ; http://resolver.tudelft.nl/uuid:ee6fbb59-c39d-44cf-8df5-9a9fe1059015

Utah State University

30. Brunson, Jerilyn. Hopping Conductivity and Charge Transport in Low Density Polyethylene.

Degree: PhD, Physics, 2010, Utah State University

URL: https://digitalcommons.usu.edu/etd/562

► The properties and behaviors of charge transport mechanisms in highly insulating polymers are investigated by measuring conduction currents through thin film samples of low… (more)

Subjects/Keywords: hopping conductivity; charge transport; low density; polyethylene; Condensed Matter Physics

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APA (6^th Edition):

Brunson, J. (2010). Hopping Conductivity and Charge Transport in Low Density Polyethylene. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/562

Chicago Manual of Style (16^th Edition):

Brunson, Jerilyn. “Hopping Conductivity and Charge Transport in Low Density Polyethylene.” 2010. Doctoral Dissertation, Utah State University. Accessed October 15, 2019. https://digitalcommons.usu.edu/etd/562.

MLA Handbook (7^th Edition):

Brunson, Jerilyn. “Hopping Conductivity and Charge Transport in Low Density Polyethylene.” 2010. Web. 15 Oct 2019.

Vancouver:

Brunson J. Hopping Conductivity and Charge Transport in Low Density Polyethylene. [Internet] [Doctoral dissertation]. Utah State University; 2010. [cited 2019 Oct 15]. Available from: https://digitalcommons.usu.edu/etd/562.

Council of Science Editors:

Brunson J. Hopping Conductivity and Charge Transport in Low Density Polyethylene. [Doctoral Dissertation]. Utah State University; 2010. Available from: https://digitalcommons.usu.edu/etd/562

Open Access Theses and Dissertations