subject:( Photocathode)

University of Manchester

1. Chanlek, Narong. Quantum Efficiency Lifetime Studies using the Photocathode Preparation Experimental Facility Developed for the ALICE Accelerator.

Degree: 2012, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:146224

► This thesis describes the development of a gallium arsenide (GaAs) photocathode preparation facility (PPF) with a load-lock interface as part of an upgrade to the… (more)

Subjects/Keywords: GaAs photocathode

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

APA (6^th Edition):

Chanlek, N. (2012). Quantum Efficiency Lifetime Studies using the Photocathode Preparation Experimental Facility Developed for the ALICE Accelerator. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:146224

Chicago Manual of Style (16^th Edition):

Chanlek, Narong. “Quantum Efficiency Lifetime Studies using the Photocathode Preparation Experimental Facility Developed for the ALICE Accelerator.” 2012. Doctoral Dissertation, University of Manchester. Accessed December 09, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:146224.

MLA Handbook (7^th Edition):

Chanlek, Narong. “Quantum Efficiency Lifetime Studies using the Photocathode Preparation Experimental Facility Developed for the ALICE Accelerator.” 2012. Web. 09 Dec 2019.

Vancouver:

Chanlek N. Quantum Efficiency Lifetime Studies using the Photocathode Preparation Experimental Facility Developed for the ALICE Accelerator. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2019 Dec 09]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:146224.

Council of Science Editors:

Chanlek N. Quantum Efficiency Lifetime Studies using the Photocathode Preparation Experimental Facility Developed for the ALICE Accelerator. [Doctoral Dissertation]. University of Manchester; 2012. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:146224

University of Manchester

2. Chanlek, Narong. Quantum efficiency lifetime studies using the photocathode preparation experimental facility developed for the ALICE Accelerator.

Degree: PhD, 2012, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/quantum-efficiency-lifetime-studies-using-the-photocathode-preparation-experimental-facility-developed-for-the-alice-accelerator(197791f0-518e-4257-aa0e-04f9942b4110).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549031

► This thesis describes the development of a gallium arsenide (GaAs) photocathode preparation facility (PPF) with a load-lock interface as part of an upgrade to the… (more)

Subjects/Keywords: 535; GaAs photocathode

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):

Chanlek, N. (2012). Quantum efficiency lifetime studies using the photocathode preparation experimental facility developed for the ALICE Accelerator. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/quantum-efficiency-lifetime-studies-using-the-photocathode-preparation-experimental-facility-developed-for-the-alice-accelerator(197791f0-518e-4257-aa0e-04f9942b4110).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549031

Chicago Manual of Style (16^th Edition):

Chanlek, Narong. “Quantum efficiency lifetime studies using the photocathode preparation experimental facility developed for the ALICE Accelerator.” 2012. Doctoral Dissertation, University of Manchester. Accessed December 09, 2019. https://www.research.manchester.ac.uk/portal/en/theses/quantum-efficiency-lifetime-studies-using-the-photocathode-preparation-experimental-facility-developed-for-the-alice-accelerator(197791f0-518e-4257-aa0e-04f9942b4110).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549031.

MLA Handbook (7^th Edition):

Chanlek, Narong. “Quantum efficiency lifetime studies using the photocathode preparation experimental facility developed for the ALICE Accelerator.” 2012. Web. 09 Dec 2019.

Vancouver:

Chanlek N. Quantum efficiency lifetime studies using the photocathode preparation experimental facility developed for the ALICE Accelerator. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2019 Dec 09]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/quantum-efficiency-lifetime-studies-using-the-photocathode-preparation-experimental-facility-developed-for-the-alice-accelerator(197791f0-518e-4257-aa0e-04f9942b4110).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549031.

Council of Science Editors:

Chanlek N. Quantum efficiency lifetime studies using the photocathode preparation experimental facility developed for the ALICE Accelerator. [Doctoral Dissertation]. University of Manchester; 2012. Available from: https://www.research.manchester.ac.uk/portal/en/theses/quantum-efficiency-lifetime-studies-using-the-photocathode-preparation-experimental-facility-developed-for-the-alice-accelerator(197791f0-518e-4257-aa0e-04f9942b4110).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549031

NSYSU

3. Hsu, Chin. One-step Synthesis of Copper Tin Sulfide Photocathodes for Photoelectrochemical Hydrogen Generation.

Degree: Master, Materials and Optoelectronic Science, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730118-123125

► Copper tin sulfide (CTS) is one of promising photocathode materials for photoelectrochemical (PEC) water splitting, because it has a suitable band structure and large absorption… (more)

Subjects/Keywords: FTO; photocathode; CTS; solvothermal method

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

APA (6^th Edition):

Hsu, C. (2018). One-step Synthesis of Copper Tin Sulfide Photocathodes for Photoelectrochemical Hydrogen Generation. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730118-123125

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):

Hsu, Chin. “One-step Synthesis of Copper Tin Sulfide Photocathodes for Photoelectrochemical Hydrogen Generation.” 2018. Thesis, NSYSU. Accessed December 09, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730118-123125.

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

MLA Handbook (7^th Edition):

Hsu, Chin. “One-step Synthesis of Copper Tin Sulfide Photocathodes for Photoelectrochemical Hydrogen Generation.” 2018. Web. 09 Dec 2019.

Vancouver:

Hsu C. One-step Synthesis of Copper Tin Sulfide Photocathodes for Photoelectrochemical Hydrogen Generation. [Internet] [Thesis]. NSYSU; 2018. [cited 2019 Dec 09]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730118-123125.

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

Council of Science Editors:

Hsu C. One-step Synthesis of Copper Tin Sulfide Photocathodes for Photoelectrochemical Hydrogen Generation. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730118-123125

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

Northeastern University

4. Celestin, Sue-Jonnathane. Understanding thin film formation through molecular beam epitaxy studies of atomic-level interactions in order to link deposition process conditions to device performance in 2 materials: MgO and Cs3Sb.

Degree: PhD, Department of Chemical Engineering, 2018, Northeastern University

URL: http://hdl.handle.net/2047/D20294156

► The understanding and control of initial states of film formation acquired by building correlations between deposition parameters (e.g. substrate temperature, relative fluxes) and film metrics… (more)

▼ The understanding and control of initial states of film formation acquired by building correlations between deposition parameters (e.g. substrate temperature, relative fluxes) and film metrics (e.g. chemistry, structure, quantum efficiency) can open up new possibilities in the development of engineered thin film materials that can meet the evolving and necessary performance requirements of next-generation two-dimensional electronic materials. Robust correlations between deposition parameters and film metrics are also necessary to engineer scalable manufacturing processes that produce consistent material quality results. The work of this dissertation builds the case for dynamic, real time characterization of film formation and explores next-generation X-ray light source materials needed to achieve this probing of bond formation.; Studies of the chemistry and structure evolution of the MgO films grown on SiC suggest that the starting substrate surface chemistry and structure is critical to effective integration, and the etching mechanism using hydrogen seems to be key in controlling the starting surface. We have investigated the effect of two different cleaning mechanisms on the chemistry and structure of 6H-SiC (0001). The hydrogen furnace cleaning at 1600 ˚C of 6H-SiC (0001) substrates surfaces proved to produce a smooth, uniformly stepped surface and a √√3×√3R30º surface reconstruction, with less than 10 at% residual oxygen contamination. Whereas, the atomic hydrogen cleaning of 6H-SiC (0001) substrates was observed to produce a (1×1) surface structure with less than 7 at% residual oxygen contamination at relatively low temperature of 700 C. In addition the structure and initial layers of crystalline MgO (111) films deposited on SiC (0001) by MBE are greatly affected by the resulting chemistry of the MgO films. The MgO deposited by MBE on SiC prepared by the hydrogen furnace was found to have both two dimensional and three dimensional features even at thickness of around 2nm. Although the MgO template is seen to be effective and necessary to promote the pseudo-hexagonal, heteroepitaxy of BTO(111), The chemistry and structure of high quality BTO films are highly dependent on that of the under-layer MgO films. Therefore, it is necessary to understand atomic level mechanisms involved in the nucleation and growth of thin films on solid surfaces, in order to develop consistent processing strategies capable of producing high-quality MgO thin film in a reproducible way. However, the challenge of reproducing desired film properties is generally highly impeded by the limitations of static characterization techniques that are available and used in the MgO film study. Dynamically observing how bonds are formed in real-time at surfaces and interfaces is needed in order to have a more consistent process for enable films through a variety of techniques.; The challenges and limitations of using static characterization techniques to develop a consistent process for enable high quality MgO and BTO films led to the study of…

Subjects/Keywords: Cs3Sb; MgO; oxide thin films; photocathode

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APA (6^th Edition):

Celestin, S. (2018). Understanding thin film formation through molecular beam epitaxy studies of atomic-level interactions in order to link deposition process conditions to device performance in 2 materials: MgO and Cs3Sb. (Doctoral Dissertation). Northeastern University. Retrieved from http://hdl.handle.net/2047/D20294156

Chicago Manual of Style (16^th Edition):

Celestin, Sue-Jonnathane. “Understanding thin film formation through molecular beam epitaxy studies of atomic-level interactions in order to link deposition process conditions to device performance in 2 materials: MgO and Cs3Sb.” 2018. Doctoral Dissertation, Northeastern University. Accessed December 09, 2019. http://hdl.handle.net/2047/D20294156.

MLA Handbook (7^th Edition):

Celestin, Sue-Jonnathane. “Understanding thin film formation through molecular beam epitaxy studies of atomic-level interactions in order to link deposition process conditions to device performance in 2 materials: MgO and Cs3Sb.” 2018. Web. 09 Dec 2019.

Vancouver:

Celestin S. Understanding thin film formation through molecular beam epitaxy studies of atomic-level interactions in order to link deposition process conditions to device performance in 2 materials: MgO and Cs3Sb. [Internet] [Doctoral dissertation]. Northeastern University; 2018. [cited 2019 Dec 09]. Available from: http://hdl.handle.net/2047/D20294156.

Council of Science Editors:

Celestin S. Understanding thin film formation through molecular beam epitaxy studies of atomic-level interactions in order to link deposition process conditions to device performance in 2 materials: MgO and Cs3Sb. [Doctoral Dissertation]. Northeastern University; 2018. Available from: http://hdl.handle.net/2047/D20294156

5. Queyriaux, Nicolas. Vers la construction d'une photocathode de production d'hydrogène par une approche moléculaire : Towards the construction of a H2-evolving photocathode by a molecular strategy.

Degree: Docteur es, Chimie inorganique et Bio inorganique, 2016, Grenoble Alpes

URL: http://www.theses.fr/2016GREAV033

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Alors que les besoins en énergie de nos sociétés modernes ne cessent de croître, et que la prise en compte des enjeux environnementaux occupe une… (more)

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Alors que les besoins en énergie de nos sociétés modernes ne cessent de croître, et que la prise en compte des enjeux environnementaux occupe une place de plus en plus importante dans le développement de nouvelles technologies, la mise au point de procédés de production d’hydrogène utilisant des ressources renouvelables, telles que le rayonnement solaire comme source d'énergie ou l’eau comme donneur d’électrons et de protons, est un enjeu de toute première nécessité. Ce travail de thèse s’inscrit dans la continuité des études menées au sein de l’équipe « SolHyCat » du Laboratoire de Chimie et Biologie des Métaux sur le développement de systèmes électro- et photocatalytiques pour la réduction des protons en H2. Dans cette perspective, nous avons ainsi contribué à l’élaboration d’une photocathode moléculaire de production de H2 à travers la compréhension de différents paramètres moléculaires relatifs à sa construction. Dans un premier temps, nous nous sommes intéressés à la construction d’un lien covalent entre un motif photosensibilisateur et un centre catalytique de réduction des protons via la synthèse de dyades modèles. En parallèle, nous avons développé une méthodologie de synthèse permettant l’introduction de groupements d’ancrage robustes dans la sphère de coordination de photosensibilisateurs métallo-organiques. Enfin, l'étude des propriétés électrochimiques d'une nouvelle série de catalyseurs de réduction des protons à sphère de coordination polypyridinique a été étudiée.

There is an urgent need to provide solutions for the energetic challenge our planet has to face. The production of “environmentally friendly” fuels such as dihydrogen H2 through sunlight-driven water splitting holds great promise. Hydrogen is indeed a carbon-free energy carrier that can be stored and used on request to produce electricity thanks to the mature fuel cell technology. Moreover, water and solar energy form the ideal couple for H2 production because they are both readily available and their use is considered to be safe for the environment. The design and study of molecular photocatalytic systems for H2 evolution from water has therefore been the subject of intensive research interest in the last decade and their implementation into functional dye-sensitized photoelectrocatalytic cells recently appeared in the literature. It is nevertheless necessary to optimize the efficiency of these molecular systems in order to reach the targeted solar-to-hydrogen conversion yield. In that context, this PhD thesis aimed at getting a better understanding of parameters relevant for the optimization of molecular H2-evolving photocathodes: first, different coupling strategies have been studied to covalently assemble a light-harvesting unit with a redox-active moiety; second, a synthetic methodology allowing introduction of robust anchoring groups in the coordination sphere of ruthenium photosensitizers has been widely studied and the first photoelectrodes characterized; finally, a new series of proton reduction catalysts featuring a polypyridinic…

Advisors/Committee Members: Artero, Vincent (thesis director), Chavarot-Kerlidou, Murielle (thesis director).

Subjects/Keywords: Hydrogène; Catalyse; Photosynthèse artificielle; Photocathode; Complexes de ruthénium; Hydrogen; Catalysis; Artificial Photosynthesis; Photocathode; Ruthenium complexes

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APA (6^th Edition):

Queyriaux, N. (2016). Vers la construction d'une photocathode de production d'hydrogène par une approche moléculaire : Towards the construction of a H2-evolving photocathode by a molecular strategy. (Doctoral Dissertation). Grenoble Alpes. Retrieved from http://www.theses.fr/2016GREAV033

Chicago Manual of Style (16^th Edition):

Queyriaux, Nicolas. “Vers la construction d'une photocathode de production d'hydrogène par une approche moléculaire : Towards the construction of a H2-evolving photocathode by a molecular strategy.” 2016. Doctoral Dissertation, Grenoble Alpes. Accessed December 09, 2019. http://www.theses.fr/2016GREAV033.

MLA Handbook (7^th Edition):

Queyriaux, Nicolas. “Vers la construction d'une photocathode de production d'hydrogène par une approche moléculaire : Towards the construction of a H2-evolving photocathode by a molecular strategy.” 2016. Web. 09 Dec 2019.

Vancouver:

Queyriaux N. Vers la construction d'une photocathode de production d'hydrogène par une approche moléculaire : Towards the construction of a H2-evolving photocathode by a molecular strategy. [Internet] [Doctoral dissertation]. Grenoble Alpes; 2016. [cited 2019 Dec 09]. Available from: http://www.theses.fr/2016GREAV033.

Council of Science Editors:

Queyriaux N. Vers la construction d'une photocathode de production d'hydrogène par une approche moléculaire : Towards the construction of a H2-evolving photocathode by a molecular strategy. [Doctoral Dissertation]. Grenoble Alpes; 2016. Available from: http://www.theses.fr/2016GREAV033

Université Montpellier II

6. Foltz, Justin. Optimisation des photocathodes à base d'(In)GaAs pour systèmes de vision nocturne : Optimisation of (In)GaAs photocathodes for night vision system.

Degree: Docteur es, Electronique, 2011, Université Montpellier II

URL: http://www.theses.fr/2011MON20246

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Ce travail de thèse, effectué en collaboration avec la société PHOTONIS, un des leaders mondiaux dans la conception de tubes intensificateur de lumière, et l'Institut… (more)

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Ce travail de thèse, effectué en collaboration avec la société PHOTONIS, un des leaders mondiaux dans la conception de tubes intensificateur de lumière, et l'Institut d'Électronique du Sud de l'Université de Montpellier, a pour but l'optimisation des photocathodes de 3e génération à base d'(In)GaAs pour lunettes de vision nocturne. Après avoir décrit le principe d'un tube intensificateur de lumière et présenté les performances atteintes par ces différentes générations de dispositifs, le cas plus spécifique de la photocathode est abordé. Par la simulation des performances, deux structures photocathodes sont proposées. L'une pour la détection des faibles niveaux de lumière résiduelle dans le visible, l'autre pour l'extension de la réponse spectrale vers le domaine du proche infrarouge (λ=1,06µm). Le processus technologique pour la fabrication de photocathodes de hautes performances est décrit étape par étape puis les caractérisations électro-optiques, associées aux composants réalisés, sont présentées. Les résultats obtenus montrent des performances en termes de réponse spectrale qui dépassent régulièrement les 1600µA/lm.

This thesis reports on the optimization of 3rd generation photocathode based on (In)GaAs materialfor night vision google. It is realized in collaboration between the PHOTONIS Company, one of the world leaders in conception of image intensifier and the Institut d'Électronique du Sud from Montpellier University. After a description of an image intensifier operation and a presentation of the state of the art of the image intensifier devices, the more specific case of the photocathode is described. Two photocathodes structures are deduced from simulation of performances, one for detection of low levels of visible residual light and the other for infrared extension of spectral response (λ=1.06µm). The different steps of the technological process for the manufacturing of high efficiencies photocathodes are described and the electro-optical characterizations made are presented. The results show performances as hight as 1600$µA/lm.

Advisors/Committee Members: Christol, Philippe (thesis director), Orsal, Bernard (thesis director).

Subjects/Keywords: Vision nocturne; Intensificateur de lumière; Photocathode AsGa; Night Vision; Image intensifier; GaAs photocathode

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

APA (6^th Edition):

Foltz, J. (2011). Optimisation des photocathodes à base d'(In)GaAs pour systèmes de vision nocturne : Optimisation of (In)GaAs photocathodes for night vision system. (Doctoral Dissertation). Université Montpellier II. Retrieved from http://www.theses.fr/2011MON20246

Chicago Manual of Style (16^th Edition):

Foltz, Justin. “Optimisation des photocathodes à base d'(In)GaAs pour systèmes de vision nocturne : Optimisation of (In)GaAs photocathodes for night vision system.” 2011. Doctoral Dissertation, Université Montpellier II. Accessed December 09, 2019. http://www.theses.fr/2011MON20246.

MLA Handbook (7^th Edition):

Foltz, Justin. “Optimisation des photocathodes à base d'(In)GaAs pour systèmes de vision nocturne : Optimisation of (In)GaAs photocathodes for night vision system.” 2011. Web. 09 Dec 2019.

Vancouver:

Foltz J. Optimisation des photocathodes à base d'(In)GaAs pour systèmes de vision nocturne : Optimisation of (In)GaAs photocathodes for night vision system. [Internet] [Doctoral dissertation]. Université Montpellier II; 2011. [cited 2019 Dec 09]. Available from: http://www.theses.fr/2011MON20246.

Council of Science Editors:

Foltz J. Optimisation des photocathodes à base d'(In)GaAs pour systèmes de vision nocturne : Optimisation of (In)GaAs photocathodes for night vision system. [Doctoral Dissertation]. Université Montpellier II; 2011. Available from: http://www.theses.fr/2011MON20246

University of Illinois – Chicago

7. Berger, Joel A. Ultrafast Electron Microscopes: Design Criteria, Electron Sources, and Column Modeling.

Degree: 2013, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/10206

► Dynamic Transmission Electron Microscopy, and its picosecond/femtosecond subclass Ultrafast Electron Microscopy, is an emerging field in instrumentation science. It attempts to combine the nanoscale spatial… (more)

Subjects/Keywords: ultrafast electron microscopy; photocathode; femtosecond; picosecond; solid-state laser; nanoscale

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APA (6^th Edition):

Berger, J. A. (2013). Ultrafast Electron Microscopes: Design Criteria, Electron Sources, and Column Modeling. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/10206

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):

Berger, Joel A. “Ultrafast Electron Microscopes: Design Criteria, Electron Sources, and Column Modeling.” 2013. Thesis, University of Illinois – Chicago. Accessed December 09, 2019. http://hdl.handle.net/10027/10206.

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

MLA Handbook (7^th Edition):

Berger, Joel A. “Ultrafast Electron Microscopes: Design Criteria, Electron Sources, and Column Modeling.” 2013. Web. 09 Dec 2019.

Vancouver:

Berger JA. Ultrafast Electron Microscopes: Design Criteria, Electron Sources, and Column Modeling. [Internet] [Thesis]. University of Illinois – Chicago; 2013. [cited 2019 Dec 09]. Available from: http://hdl.handle.net/10027/10206.

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

Council of Science Editors:

Berger JA. Ultrafast Electron Microscopes: Design Criteria, Electron Sources, and Column Modeling. [Thesis]. University of Illinois – Chicago; 2013. Available from: http://hdl.handle.net/10027/10206

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

NSYSU

8. Lee, Kuan-Hsien. Nanosheet Structured Cu2ZnSnS4: Synthesis, Characterization and Applications in Photoelectrochemical Hydrogen Evolution.

Degree: Master, Materials and Optoelectronic Science, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-112327

► Copper Zinc Tin Sulfide (CZTS) has a direct band gap with high absorption coefficient, and its component element is earth abundance and non-toxicity. CZTS has… (more)

Subjects/Keywords: solvothermal; hydrogen produce; Cu2ZnSnS4; photoelectrochemical; CuS; hydrothermal; photocathode

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APA (6^th Edition):

Lee, K. (2018). Nanosheet Structured Cu2ZnSnS4: Synthesis, Characterization and Applications in Photoelectrochemical Hydrogen Evolution. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-112327

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):

Lee, Kuan-Hsien. “Nanosheet Structured Cu2ZnSnS4: Synthesis, Characterization and Applications in Photoelectrochemical Hydrogen Evolution.” 2018. Thesis, NSYSU. Accessed December 09, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-112327.

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

MLA Handbook (7^th Edition):

Lee, Kuan-Hsien. “Nanosheet Structured Cu2ZnSnS4: Synthesis, Characterization and Applications in Photoelectrochemical Hydrogen Evolution.” 2018. Web. 09 Dec 2019.

Vancouver:

Lee K. Nanosheet Structured Cu2ZnSnS4: Synthesis, Characterization and Applications in Photoelectrochemical Hydrogen Evolution. [Internet] [Thesis]. NSYSU; 2018. [cited 2019 Dec 09]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-112327.

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

Council of Science Editors:

Lee K. Nanosheet Structured Cu2ZnSnS4: Synthesis, Characterization and Applications in Photoelectrochemical Hydrogen Evolution. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-112327

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

9. Toupin, Johanna. Photoélectrolyse de l'eau : étude de matériaux semiconducteurs de type p comme photocathode pour la réduction de protons en H2 : Water splitting : study of p-type semiconducting materials as photocathode for protons reduction into H2.

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

URL: http://www.theses.fr/2016PA066015

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L’objectif de ce travail a été d’étudier des matériaux semiconducteurs de type p comme photocathode pour la réduction de protons dans le cadre de la… (more)

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L’objectif de ce travail a été d’étudier des matériaux semiconducteurs de type p comme photocathode pour la réduction de protons dans le cadre de la photoélectrolyse de l’eau. Ainsi, deux types de matériaux ont été étudiés, des oxydes de cuivre, Cu2O et CuO, et des matériaux à structure pérovskite (ATiO3, A=Ca, Ba, Sr) dopées au fer et à l’azote. Les oxydes de cuivre ont été synthétisés par deux voies différentes afin d’obtenir des films : par voie sol-gel couplée au dip-coating et par électro-dépôt et anodisation du cuivre. La photocorrosion des oxydes de cuivre en milieu aqueux et sous illumination a été mise en évidence. La protection des oxydes de cuivre via une hétérojonction avec un semiconducteur de type n (TiO2 ou BaTiO3) a révélé une meilleure stabilité des électrodes au cours du temps ainsi que des photocourants élevés grâce à une composition et une architecture originales. Les pérovskites ont été synthétisées par voie sol-gel couplée au dip-coating. Ce sont des semiconducteurs de type n ; ainsi l’étude du dopage au fer, pour substituer le titane, et à l’azote, pour substituer l’oxygène, a mis en évidence un changement de nature de type n à type p, ainsi qu’une diminution de la largeur de bande interdite. Les propriétés physico-chimiques de toutes les électrodes synthétisées ont été caractérisées (structure cristalline, morphologie, propriétés optiques et électrochimiques) et discutées en fonction de leur composition et des paramètres de synthèse. Ces travaux ont permis d’élaborer des photocathodes originales, performantes et stables au cours du temps (oxydes de cuivre protégées), et de démontrer l’utilisation de pérovskites dopées pour cette application.

The aim of this work was to study p-type semiconducting materials as photocathodes for protons reduction into H2 for water splitting application. Two types of materials have been studied: copper oxides, Cu2O and CuO, and materials with a perovskite structure (ATiO3, A=Ca, Ba, Sr) doped by iron and nitrogen. Copper oxides have been synthetized by two different ways in order to obtain films: sol-gel process coupled with dip-coating and copper plating and anodization. Copper oxides photocorrosion has been highlighted in aqueous environment and under illumination. Their protection via a heterojunction with an n-type semiconductor (TiO2 and BaTiO3) improved electrodes stability over time and photocurrents, thanks to original composition and architecture. Perovskites have been synthetized by sol-gel process coupled with dip-coating. They are well-known as n-type semiconductors; so the study of doping with iron, to substitute titanium, and with nitrogen, to substitute oxygen, shows a change from n-type to p-type, and a reduction of the band gap. The physical and chemical properties of the synthetized electrodes were characterized (crystal structure, morphology, optical and photoelectrochemical properties) and discussed according to the composition and synthesis parameters. This work enables to obtain original, efficient, and stable over time, photocathodes…

Advisors/Committee Members: Artero, Vincent (thesis director), Laberty-Robert, Christel (thesis director).

Subjects/Keywords: Photoélectrolyse de l'eau; Photocathode; Semiconducteurs de type p; Oxydes de cuivre; Pérovskites; Procédé sol-Gel; Dip-Coating; Water splitting; Photocathode; Copper oxides; 541.3

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

APA (6^th Edition):

Toupin, J. (2016). Photoélectrolyse de l'eau : étude de matériaux semiconducteurs de type p comme photocathode pour la réduction de protons en H2 : Water splitting : study of p-type semiconducting materials as photocathode for protons reduction into H2. (Doctoral Dissertation). Université Pierre et Marie Curie – Paris VI. Retrieved from http://www.theses.fr/2016PA066015

Chicago Manual of Style (16^th Edition):

Toupin, Johanna. “Photoélectrolyse de l'eau : étude de matériaux semiconducteurs de type p comme photocathode pour la réduction de protons en H2 : Water splitting : study of p-type semiconducting materials as photocathode for protons reduction into H2.” 2016. Doctoral Dissertation, Université Pierre et Marie Curie – Paris VI. Accessed December 09, 2019. http://www.theses.fr/2016PA066015.

MLA Handbook (7^th Edition):

Toupin, Johanna. “Photoélectrolyse de l'eau : étude de matériaux semiconducteurs de type p comme photocathode pour la réduction de protons en H2 : Water splitting : study of p-type semiconducting materials as photocathode for protons reduction into H2.” 2016. Web. 09 Dec 2019.

Vancouver:

Toupin J. Photoélectrolyse de l'eau : étude de matériaux semiconducteurs de type p comme photocathode pour la réduction de protons en H2 : Water splitting : study of p-type semiconducting materials as photocathode for protons reduction into H2. [Internet] [Doctoral dissertation]. Université Pierre et Marie Curie – Paris VI; 2016. [cited 2019 Dec 09]. Available from: http://www.theses.fr/2016PA066015.

Council of Science Editors:

Toupin J. Photoélectrolyse de l'eau : étude de matériaux semiconducteurs de type p comme photocathode pour la réduction de protons en H2 : Water splitting : study of p-type semiconducting materials as photocathode for protons reduction into H2. [Doctoral Dissertation]. Université Pierre et Marie Curie – Paris VI; 2016. Available from: http://www.theses.fr/2016PA066015

Loughborough University

10. Mistry, Sonal. Preparation and evaluation of metal surfaces for use as photocathodes.

Degree: PhD, 2018, Loughborough University

URL: https://dspace.lboro.ac.uk/2134/33704 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.747944

► In linear accelerator driven 4th generation Free Electron Lasers (FELs), the final beam quality is set by the linac and ultimately by its photoinjector and… (more)

▼ In linear accelerator driven 4th generation Free Electron Lasers (FELs), the final beam quality is set by the linac and ultimately by its photoinjector and photocathode. Therefore, to deliver cutting-edge beam characteristics, there are stringent requirements for the photocathode used in the photoinjector. Understanding how surface properties of materials influence photocathode properties such as quantum efficiency (QE) and intrinsic emittance is critical for such sources. Metal photocathode research at Daresbury Laboratory (DL) is driven by our on-site accelerators VELA (Versatile Electron Linear Accelerator) and CLARA (Compact Linear Accelerator for Research and Applications), a free electron laser test facility. Metals offer the advantage of a fast response time which enable the generation of short electron pulses. Additionally, they are robust to conditions within the gun cavity. The main challenge with metal photocathodes is to maximise their (relatively) low electron yield. In this PhD thesis, the goal has been to carry out an experimental investigation on alternative metals to copper, correlating surface properties with photoemissive properties. A range of surface analysis techniques have been employed: surface composition was investigated using X-ray Photoelectron Spectroscopy and Medium Energy Ion Scattering, Kelvin Probe apparatus and Ultra-violet Photoelectron Spectroscopy were used to measure work function, and Atomic Force Microscopy and Interferometric microscope provided images characterising surface morphology. The photocathode properties studied include: QE measured using a 265 nm UV LED source that was later upgraded to a 266 nm UV LASER, and Mean Transverse Energy measured using the Transverse Energy Spread Spectrometer. As a result of this work, Mg, Nb, Pb, Ti and Zr have all been identified as photocathode candidate materials, each exhibiting a QE greater than Cu. Additionally, surface preparation procedures for optimising QE from a selection of metals has been explored; the findings of these experiments would suggest that ex-situ Ar plasma treatment followed by in-situ heat treatment is well suited to remove surface contaminants without altering the surface morphology of the cathode. As part of this work, metallic thin films produced by magnetron sputtering have been produced; ultimately the chosen cathode metal will be deposited onto a cathode plug which will be inserted into the electron gun that will drive CLARA. Thus the preparation of metal thin films has been investigated and the effect of different substrate materials on the film properties has been explored. Preliminary experiments studying the effects of surface roughness on photoelectron energy distribution have been conducted; the findings have not been conclusive, thus further systematic studies are required.

Subjects/Keywords: Photocathode; Metal; Thin films; Cathode; Surface; Characterisation; XPS; QE; UPS; MTE; Intrinsic emittance

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

APA (6^th Edition):

Mistry, S. (2018). Preparation and evaluation of metal surfaces for use as photocathodes. (Doctoral Dissertation). Loughborough University. Retrieved from https://dspace.lboro.ac.uk/2134/33704 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.747944

Chicago Manual of Style (16^th Edition):

Mistry, Sonal. “Preparation and evaluation of metal surfaces for use as photocathodes.” 2018. Doctoral Dissertation, Loughborough University. Accessed December 09, 2019. https://dspace.lboro.ac.uk/2134/33704 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.747944.

MLA Handbook (7^th Edition):

Mistry, Sonal. “Preparation and evaluation of metal surfaces for use as photocathodes.” 2018. Web. 09 Dec 2019.

Vancouver:

Mistry S. Preparation and evaluation of metal surfaces for use as photocathodes. [Internet] [Doctoral dissertation]. Loughborough University; 2018. [cited 2019 Dec 09]. Available from: https://dspace.lboro.ac.uk/2134/33704 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.747944.

Council of Science Editors:

Mistry S. Preparation and evaluation of metal surfaces for use as photocathodes. [Doctoral Dissertation]. Loughborough University; 2018. Available from: https://dspace.lboro.ac.uk/2134/33704 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.747944

Loughborough University

11. Mistry, Sonal. Preparation and evaluation of metal surfaces for use as photocathodes.

Degree: PhD, 2018, Loughborough University

URL: http://hdl.handle.net/2134/33704

► In linear accelerator driven 4th generation Free Electron Lasers (FELs), the final beam quality is set by the linac and ultimately by its photoinjector and… (more)

▼ In linear accelerator driven 4th generation Free Electron Lasers (FELs), the final beam quality is set by the linac and ultimately by its photoinjector and photocathode. Therefore, to deliver cutting-edge beam characteristics, there are stringent requirements for the photocathode used in the photoinjector. Understanding how surface properties of materials influence photocathode properties such as quantum efficiency (QE) and intrinsic emittance is critical for such sources. Metal photocathode research at Daresbury Laboratory (DL) is driven by our on-site accelerators VELA (Versatile Electron Linear Accelerator) and CLARA (Compact Linear Accelerator for Research and Applications), a free electron laser test facility. Metals offer the advantage of a fast response time which enable the generation of short electron pulses. Additionally, they are robust to conditions within the gun cavity. The main challenge with metal photocathodes is to maximise their (relatively) low electron yield. In this PhD thesis, the goal has been to carry out an experimental investigation on alternative metals to copper, correlating surface properties with photoemissive properties. A range of surface analysis techniques have been employed: surface composition was investigated using X-ray Photoelectron Spectroscopy and Medium Energy Ion Scattering, Kelvin Probe apparatus and Ultra-violet Photoelectron Spectroscopy were used to measure work function, and Atomic Force Microscopy and Interferometric microscope provided images characterising surface morphology. The photocathode properties studied include: QE measured using a 265 nm UV LED source that was later upgraded to a 266 nm UV LASER, and Mean Transverse Energy measured using the Transverse Energy Spread Spectrometer. As a result of this work, Mg, Nb, Pb, Ti and Zr have all been identified as photocathode candidate materials, each exhibiting a QE greater than Cu. Additionally, surface preparation procedures for optimising QE from a selection of metals has been explored; the findings of these experiments would suggest that ex-situ Ar plasma treatment followed by in-situ heat treatment is well suited to remove surface contaminants without altering the surface morphology of the cathode. As part of this work, metallic thin films produced by magnetron sputtering have been produced; ultimately the chosen cathode metal will be deposited onto a cathode plug which will be inserted into the electron gun that will drive CLARA. Thus the preparation of metal thin films has been investigated and the effect of different substrate materials on the film properties has been explored. Preliminary experiments studying the effects of surface roughness on photoelectron energy distribution have been conducted; the findings have not been conclusive, thus further systematic studies are required.

Subjects/Keywords: Photocathode; Metal; Thin films; Cathode; Surface; Characterisation; XPS; QE; UPS; MTE; Intrinsic emittance

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

APA (6^th Edition):

Mistry, S. (2018). Preparation and evaluation of metal surfaces for use as photocathodes. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/33704

Chicago Manual of Style (16^th Edition):

Mistry, Sonal. “Preparation and evaluation of metal surfaces for use as photocathodes.” 2018. Doctoral Dissertation, Loughborough University. Accessed December 09, 2019. http://hdl.handle.net/2134/33704.

MLA Handbook (7^th Edition):

Mistry, Sonal. “Preparation and evaluation of metal surfaces for use as photocathodes.” 2018. Web. 09 Dec 2019.

Vancouver:

Mistry S. Preparation and evaluation of metal surfaces for use as photocathodes. [Internet] [Doctoral dissertation]. Loughborough University; 2018. [cited 2019 Dec 09]. Available from: http://hdl.handle.net/2134/33704.

Council of Science Editors:

Mistry S. Preparation and evaluation of metal surfaces for use as photocathodes. [Doctoral Dissertation]. Loughborough University; 2018. Available from: http://hdl.handle.net/2134/33704

University of Illinois – Chicago

12. Rickman, Benjamin L. Electron Sources and Column Components for Ultrafast Electron Microscopy.

Degree: 2017, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/22109

► Ultrafast Electron Microscopy (UEM) is a promising new research instrumentation for the material sciences that is targeted towards improving the combined spatial and temporal resolution… (more)

Subjects/Keywords: ultrafast electron microscopy; UEM; electron microscopy; dynamic transmission electron; DTEM; pulsed electron source; photocathode; high brightness; low emittance

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

APA (6^th Edition):

Rickman, B. L. (2017). Electron Sources and Column Components for Ultrafast Electron Microscopy. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/22109

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):

Rickman, Benjamin L. “Electron Sources and Column Components for Ultrafast Electron Microscopy.” 2017. Thesis, University of Illinois – Chicago. Accessed December 09, 2019. http://hdl.handle.net/10027/22109.

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

MLA Handbook (7^th Edition):

Rickman, Benjamin L. “Electron Sources and Column Components for Ultrafast Electron Microscopy.” 2017. Web. 09 Dec 2019.

Vancouver:

Rickman BL. Electron Sources and Column Components for Ultrafast Electron Microscopy. [Internet] [Thesis]. University of Illinois – Chicago; 2017. [cited 2019 Dec 09]. Available from: http://hdl.handle.net/10027/22109.

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

Council of Science Editors:

Rickman BL. Electron Sources and Column Components for Ultrafast Electron Microscopy. [Thesis]. University of Illinois – Chicago; 2017. Available from: http://hdl.handle.net/10027/22109

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

13. Al Mamun, Md Abdullah. Thin Film Studies Toward Improving the Performance of Accelerator Electron Sources.

Degree: PhD, Mechanical & Aerospace Engineering, 2016, Old Dominion University

URL: 9781339893211 ; https://digitalcommons.odu.edu/mae_etds/6

► Future electron accelerators require DC high voltage photoguns to operate beyond the present state of the art to conduct new experiments that require ultra-bright… (more)

▼ Future electron accelerators require DC high voltage photoguns to operate beyond the present state of the art to conduct new experiments that require ultra-bright electron beams with high average current and higher bunch charge. To meet these demands, the accelerators must demonstrate improvements in a number of photogun areas including vacuum, field emission elimination in high voltage electrodes, and photocathodes. This dissertation illustrates how these improvements can be achieved by the application of suitable thin-films to the photogun structure for producing ultra-bright electron beams. This work is composed of three complementary studies. First, the outgassing rates of three nominally identical 304L stainless steel vacuum chambers were studied to determine the effects of chamber coatings (silicon and titanium nitride) and heat treatments. For an uncoated stainless steel chamber, the diffusion limited outgassing was taken over by the recombination limited process as soon as a low outgassing rate of ~1.79(+/-0.05) x 10—13 Torr L s—1 cm—2 was achieved. An amorphous silicon coating on the stainless steel chambers exhibited recombination limited behavior and any heat treatment became ineffective in reducing the outgassing rate. A TiN coated chamber yielded the smallest apparent outgassing rate of all the chambers: 6.44(+/-0.05) x 10—13 Torr L s—1 cm—2 following an initial 90 °C bake and 2(+/-20) x 10—16 Torr L s—1 cm—2 following the final bake in the series. This perceived low outgassing rate was attributed to the small pumping nature of TiN coating itself. Second, the high voltage performance of three TiN-coated aluminum electrodes, before and after gas conditioning with helium, were compared to that of bare aluminum electrodes and electrodes manufactured from titanium alloy (Ti-6Al-4V). This study suggests that aluminum electrodes, coated with TiN, could simplify the task of implementing photocathode cooling, which is required for future high current electron beam applications. The best performing TiN-coated aluminum electrode demonstrated less than 15 pA of field emission current at —175 kV for a 10 mm cathode/anode gap, which corresponds to a field strength of 22.5 MV/m. Third, the effect of antimony thickness on the performance of bialkali-antimonide photocathodes was studied. The high-capacity effusion source enabled us to successfully manufacture photocathodes having a maximum QE around 10% and extended low voltage 1/e lifetime (> 90 days) at 532 nm via the co-deposition method, with relatively thick layers of antimony (≥ 300 nm). We speculate that alkali co-deposition provides optimized stoichiometry for photocathodes manufactured using thick Sb layers, which could serve as a reservoir for the alkali. In summary, this research examined the effectiveness of thin films applied on photogun chamber components to achieve an extremely high vacuum, to eliminate high voltage induced field emission from electrodes, and to generate photocurrent with high quantum yield with an extended… Advisors/Committee Members: Abdelmageed A. Elmustafa, Miltiadis Kotinis, Dipankar Ghosh, Bernard Mathew Poelker.

Subjects/Keywords: Accelerator electron source; Electron photogun; Field emission; Outgassing; Photocathode; Thin film; Materials Science and Engineering; Mechanical Engineering; Power and Energy

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

APA (6^th Edition):

Al Mamun, M. A. (2016). Thin Film Studies Toward Improving the Performance of Accelerator Electron Sources. (Doctoral Dissertation). Old Dominion University. Retrieved from 9781339893211 ; https://digitalcommons.odu.edu/mae_etds/6

Chicago Manual of Style (16^th Edition):

Al Mamun, Md Abdullah. “Thin Film Studies Toward Improving the Performance of Accelerator Electron Sources.” 2016. Doctoral Dissertation, Old Dominion University. Accessed December 09, 2019. 9781339893211 ; https://digitalcommons.odu.edu/mae_etds/6.

MLA Handbook (7^th Edition):

Al Mamun, Md Abdullah. “Thin Film Studies Toward Improving the Performance of Accelerator Electron Sources.” 2016. Web. 09 Dec 2019.

Vancouver:

Al Mamun MA. Thin Film Studies Toward Improving the Performance of Accelerator Electron Sources. [Internet] [Doctoral dissertation]. Old Dominion University; 2016. [cited 2019 Dec 09]. Available from: 9781339893211 ; https://digitalcommons.odu.edu/mae_etds/6.

Council of Science Editors:

Al Mamun MA. Thin Film Studies Toward Improving the Performance of Accelerator Electron Sources. [Doctoral Dissertation]. Old Dominion University; 2016. Available from: 9781339893211 ; https://digitalcommons.odu.edu/mae_etds/6

Vanderbilt University

14. Boulware, III, Charles H. Electron Beams from Needle Photocathodes and a New Theory of the Smith-Purcell Free-Electron Laser.

Degree: PhD, Physics, 2007, Vanderbilt University

URL: http://etd.library.vanderbilt.edu/available/etd-01292007-223843/ ;

► A promising source of radiation in the important terahertz (THz) region of the spectrum is the Smith-Purcell free-electron laser (SPFEL). This dissertation presents a new… (more)

Subjects/Keywords: needle photocathode; Smith-Purcell free-electron laser

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APA (6^th Edition):

Boulware, III, C. H. (2007). Electron Beams from Needle Photocathodes and a New Theory of the Smith-Purcell Free-Electron Laser. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://etd.library.vanderbilt.edu/available/etd-01292007-223843/ ;

Chicago Manual of Style (16^th Edition):

Boulware, III, Charles H. “Electron Beams from Needle Photocathodes and a New Theory of the Smith-Purcell Free-Electron Laser.” 2007. Doctoral Dissertation, Vanderbilt University. Accessed December 09, 2019. http://etd.library.vanderbilt.edu/available/etd-01292007-223843/ ;.

MLA Handbook (7^th Edition):

Boulware, III, Charles H. “Electron Beams from Needle Photocathodes and a New Theory of the Smith-Purcell Free-Electron Laser.” 2007. Web. 09 Dec 2019.

Vancouver:

Boulware, III CH. Electron Beams from Needle Photocathodes and a New Theory of the Smith-Purcell Free-Electron Laser. [Internet] [Doctoral dissertation]. Vanderbilt University; 2007. [cited 2019 Dec 09]. Available from: http://etd.library.vanderbilt.edu/available/etd-01292007-223843/ ;.

Council of Science Editors:

Boulware, III CH. Electron Beams from Needle Photocathodes and a New Theory of the Smith-Purcell Free-Electron Laser. [Doctoral Dissertation]. Vanderbilt University; 2007. Available from: http://etd.library.vanderbilt.edu/available/etd-01292007-223843/ ;

15. LIM WEI YANG. DEVELOPMENT OF TWO-DIMENSIONAL NANOSTRUCTURED TERNARY METAL SULFIDES FOR HYDROGEN PRODUCTION.

Degree: 2018, National University of Singapore

URL: http://scholarbank.nus.edu.sg/handle/10635/150374

Subjects/Keywords: photocatalyst; electrocatalyst; nanostructure; hydrogen evolution reaction; photocathode; cocatalyst

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APA (6^th Edition):

YANG, L. W. (2018). DEVELOPMENT OF TWO-DIMENSIONAL NANOSTRUCTURED TERNARY METAL SULFIDES FOR HYDROGEN PRODUCTION. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/150374

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):

YANG, LIM WEI. “DEVELOPMENT OF TWO-DIMENSIONAL NANOSTRUCTURED TERNARY METAL SULFIDES FOR HYDROGEN PRODUCTION.” 2018. Thesis, National University of Singapore. Accessed December 09, 2019. http://scholarbank.nus.edu.sg/handle/10635/150374.

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

MLA Handbook (7^th Edition):

YANG, LIM WEI. “DEVELOPMENT OF TWO-DIMENSIONAL NANOSTRUCTURED TERNARY METAL SULFIDES FOR HYDROGEN PRODUCTION.” 2018. Web. 09 Dec 2019.

Vancouver:

YANG LW. DEVELOPMENT OF TWO-DIMENSIONAL NANOSTRUCTURED TERNARY METAL SULFIDES FOR HYDROGEN PRODUCTION. [Internet] [Thesis]. National University of Singapore; 2018. [cited 2019 Dec 09]. Available from: http://scholarbank.nus.edu.sg/handle/10635/150374.

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

Council of Science Editors:

YANG LW. DEVELOPMENT OF TWO-DIMENSIONAL NANOSTRUCTURED TERNARY METAL SULFIDES FOR HYDROGEN PRODUCTION. [Thesis]. National University of Singapore; 2018. Available from: http://scholarbank.nus.edu.sg/handle/10635/150374

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

Kyoto University

16. Homura, Hiroya. Development of Photoelectrodes of Visible Light Responsive Semiconductors Loaded on Carbon Microfiber Felts with Three-dimensional Structure for Efficient Water Splitting .

Degree: 2019, Kyoto University

URL: http://hdl.handle.net/2433/242513

Subjects/Keywords: water splitting; carbon fiber; photoanode; photocathode; visible light

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

APA (6^th Edition):

Homura, H. (2019). Development of Photoelectrodes of Visible Light Responsive Semiconductors Loaded on Carbon Microfiber Felts with Three-dimensional Structure for Efficient Water Splitting . (Thesis). Kyoto University. Retrieved from http://hdl.handle.net/2433/242513

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):

Homura, Hiroya. “Development of Photoelectrodes of Visible Light Responsive Semiconductors Loaded on Carbon Microfiber Felts with Three-dimensional Structure for Efficient Water Splitting .” 2019. Thesis, Kyoto University. Accessed December 09, 2019. http://hdl.handle.net/2433/242513.

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

MLA Handbook (7^th Edition):

Homura, Hiroya. “Development of Photoelectrodes of Visible Light Responsive Semiconductors Loaded on Carbon Microfiber Felts with Three-dimensional Structure for Efficient Water Splitting .” 2019. Web. 09 Dec 2019.

Vancouver:

Homura H. Development of Photoelectrodes of Visible Light Responsive Semiconductors Loaded on Carbon Microfiber Felts with Three-dimensional Structure for Efficient Water Splitting . [Internet] [Thesis]. Kyoto University; 2019. [cited 2019 Dec 09]. Available from: http://hdl.handle.net/2433/242513.

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

Council of Science Editors:

Homura H. Development of Photoelectrodes of Visible Light Responsive Semiconductors Loaded on Carbon Microfiber Felts with Three-dimensional Structure for Efficient Water Splitting . [Thesis]. Kyoto University; 2019. Available from: http://hdl.handle.net/2433/242513

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

Colorado State University

17. Edelen, Jonathan Paul. Design and simulation of the Colorado State University linear accelerator system.

Degree: MS(M.S.), Electrical and Computer Engineering, 2007, Colorado State University

URL: http://hdl.handle.net/10217/88520

► The University of Twente in the Netherlands recently donated a linear accelerator and free-electron laser system to Colorado State University. A detailed model and simulation… (more)

Subjects/Keywords: beam-line; electron accelerator; linac; photocathode; photoinjector

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APA (6^th Edition):

Edelen, J. P. (2007). Design and simulation of the Colorado State University linear accelerator system. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/88520

Chicago Manual of Style (16^th Edition):

Edelen, Jonathan Paul. “Design and simulation of the Colorado State University linear accelerator system.” 2007. Masters Thesis, Colorado State University. Accessed December 09, 2019. http://hdl.handle.net/10217/88520.

MLA Handbook (7^th Edition):

Edelen, Jonathan Paul. “Design and simulation of the Colorado State University linear accelerator system.” 2007. Web. 09 Dec 2019.

Vancouver:

Edelen JP. Design and simulation of the Colorado State University linear accelerator system. [Internet] [Masters thesis]. Colorado State University; 2007. [cited 2019 Dec 09]. Available from: http://hdl.handle.net/10217/88520.

Council of Science Editors:

Edelen JP. Design and simulation of the Colorado State University linear accelerator system. [Masters Thesis]. Colorado State University; 2007. Available from: http://hdl.handle.net/10217/88520

18. Gueret, Robin. Systèmes moléculaires pour la production d'hydrogène photo-induite dans l'eau associant des catalyseurs de cobalt à un photosensibilisateur de ruthénium ou un colorant organique : Molecular systems for photo-induced hydrogen production from water involving cobalt catalysts and a ruthénium photosensitizer or an organic dye.

Degree: Docteur es, Chimie inorganique et bio inorganique, 2017, Grenoble Alpes

URL: http://www.theses.fr/2017GREAV074

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Les travaux de cette thèse sont centrés sur le développement de systèmes moléculaires en solution homogène pour la production photocatalytique de dihydrogène dans l'eau utilisant… (more)

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Les travaux de cette thèse sont centrés sur le développement de systèmes moléculaires en solution homogène pour la production photocatalytique de dihydrogène dans l'eau utilisant des catalyseurs de cobalt à ligands pentadentate tétrapyridinique ou tétra- et pentaaza macrocycliques. Associés au photosensibilisateur et à l’ascorbate comme donneur d’électron sacrificiel, les complexes à ligands macrocycliques présentent d’excellentes performances pour la production d’H2, bien supérieures à celles des complexes à ligands polypyridiniques en termes d’efficacité et de stabilité, en raison de la grande stabilité de leur état réduit «Co(I)». Enfin, [Ru(bpy)3]2+ a pu être substitué par un colorant organique très robuste du type triazatriangulénium conduisant à un système photocatalytique encore plus performant. Ces résultats démontrent que les colorants organiques sont une alternative viable aux photosensibilisateurs à base de métaux nobles, même en milieu aqueux acide.

The work of this manuscript is focused on the design of molecular systems in homogeneous solution for photocatalytic production of molecular hydrogen in water using cobalt catalysts with pentadentate tetrapyridinic and tetra- and pentaza macrocyclic ligands. In association with [Ru(bpy)3]2+ as photosensitizer and sodium ascorbate as sacrificial electron donor, the macrocycle based catalysts display high performances for H2 production, far exceeding those of the polypyridine based catalysts, both in terms of activity and stability, because of the stability of their reduced state «Co(I)». Finally, [Ru(bpy)3]2+ was successfully substituted with a robust organic dye belonging to the triazatriangulenium family, leading to an even more efficient photocatalytic system. These results demonstrate well that organic dyes are a truly efficient alternative to noble metal based photosensitizers, even in acidic aqueous medium.

Advisors/Committee Members: Collomb, Marie-Noëlle (thesis director).

Subjects/Keywords: Production photocatalytique d’hydrogène; Photocathode à base de NiO; Photosensibilisateurs sans métaux nobles; Catalyseurs moléculaires à base de cobalt; Études électrochimiques et photophysiques; Photocatalytic hydrogen production; NiO based photocathode; Noble-Metal-Free photosensitizers; Cobalt based molecular catalysts; Electrochemical and photophysical studies.; 540; 570

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

APA (6^th Edition):

Gueret, R. (2017). Systèmes moléculaires pour la production d'hydrogène photo-induite dans l'eau associant des catalyseurs de cobalt à un photosensibilisateur de ruthénium ou un colorant organique : Molecular systems for photo-induced hydrogen production from water involving cobalt catalysts and a ruthénium photosensitizer or an organic dye. (Doctoral Dissertation). Grenoble Alpes. Retrieved from http://www.theses.fr/2017GREAV074

Chicago Manual of Style (16^th Edition):

Gueret, Robin. “Systèmes moléculaires pour la production d'hydrogène photo-induite dans l'eau associant des catalyseurs de cobalt à un photosensibilisateur de ruthénium ou un colorant organique : Molecular systems for photo-induced hydrogen production from water involving cobalt catalysts and a ruthénium photosensitizer or an organic dye.” 2017. Doctoral Dissertation, Grenoble Alpes. Accessed December 09, 2019. http://www.theses.fr/2017GREAV074.

MLA Handbook (7^th Edition):

Gueret, Robin. “Systèmes moléculaires pour la production d'hydrogène photo-induite dans l'eau associant des catalyseurs de cobalt à un photosensibilisateur de ruthénium ou un colorant organique : Molecular systems for photo-induced hydrogen production from water involving cobalt catalysts and a ruthénium photosensitizer or an organic dye.” 2017. Web. 09 Dec 2019.

Vancouver:

Gueret R. Systèmes moléculaires pour la production d'hydrogène photo-induite dans l'eau associant des catalyseurs de cobalt à un photosensibilisateur de ruthénium ou un colorant organique : Molecular systems for photo-induced hydrogen production from water involving cobalt catalysts and a ruthénium photosensitizer or an organic dye. [Internet] [Doctoral dissertation]. Grenoble Alpes; 2017. [cited 2019 Dec 09]. Available from: http://www.theses.fr/2017GREAV074.

Council of Science Editors:

Gueret R. Systèmes moléculaires pour la production d'hydrogène photo-induite dans l'eau associant des catalyseurs de cobalt à un photosensibilisateur de ruthénium ou un colorant organique : Molecular systems for photo-induced hydrogen production from water involving cobalt catalysts and a ruthénium photosensitizer or an organic dye. [Doctoral Dissertation]. Grenoble Alpes; 2017. Available from: http://www.theses.fr/2017GREAV074

Johannes Gutenberg Universität Mainz

19. Barday, Roman. Untersuchungen zur Lebensdauer von NEA-Photokathoden bei der Extraktion sehr hoher mittlerer Ströme.

Degree: 2007, Johannes Gutenberg Universität Mainz

URL: http://ubm.opus.hbz-nrw.de/volltexte/2007/1375/

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Die Produktion eines spinpolarisierten Strahls mit hohem mittleren Strom ist sowohl für den Betrieb von existierenden polarisierten Quellen als auch in noch stärkerem Maße für… (more)

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Die Produktion eines spinpolarisierten Strahls mit hohem mittleren Strom ist sowohl für den Betrieb von existierenden polarisierten Quellen als auch in noch stärkerem Maße für geplante zukünftige Projekte wichtig. Die Betriebszeit solcher Quellen wird durch die Abnahme der Quantenausbeute der Photokathode mit der Zeit begrenzt. Die Problematik der Abnahme der Quantenausbeute konnte durch die Reaktion der Kathodenoberfläche mit sauerstoffhaltigen Molekülen sowie durch Ionenbombardement geklärt werden. Im Laufe dieser Arbeit wurden, teilweise zum ersten Mal, Mechanismen untersucht, die zur Entstehung der chemisch aktiven Moleküle und der Ionen beitragen und weitere Effekte, die die Betriebszeit der polarisierten Quellen reduzieren. Die Experimente wurden an einer genauen Kopie der an MAMI vorhandenen polarisierten Quelle durchgeführt. Es wurde demonstriert, dass Erwärmung der Photokathode, Ioneneinfang und Strahlverlust aufgrund der Raumladungskräfte die Kathodenlebensdauer begrenzen können. Der erste Effekt ist Erwärmung der Photokathode. Die Laserleistung wird fast vollständig in Wärmeleistung umgesetzt, was zur Absenkung der Verfügbarkeit der polarisierten Quellen führen kann, und zwar unabhängig davon, ob der Photostrom produziert wird oder nicht. Der zweite Effekt ist Ionenbombardement mit den sowohl in der Beschleunigungsstrecke als auch in der Strahlführung entstehenden Ionen. Es wurde demonstriert, dass der in der Strahlführung entstehende Ionenstrom sogar größer ist als der in der Kanone. Unter bestimmten Bedingungen können die gebildeten Ionen durch das Potenzial des Elektronenstrahls eingefangen werden und die Kanone erreichen und damit zusätzlich zur Zerstörung der negativen Elektronenaffinität beitragen. Der dritte Effekt ist Strahlverlust. Es wurde demonstriert, dass die relativen Strahlverluste kleiner als 1*10-6 sein sollten, um eine Lebensdauer von mehr als 1000 Stunden beim Strom von 100 A zu erreichen, was für die vorhandene Apparatur möglich ist. Zur Erzeugung extrem hoher Ströme wurde zum ersten Mal im Bereich der spinpolarisierten Quellen das Prinzip der „Energierückgewinnung“ eingesetzt. Experimente bei einer mittleren Stromstärke von 11.4 mA und einer Spitzenstromstärke von 57 mA bei 1% Tastverhältnis wurden bereits durchgeführt.

The production of a polarized electron beam with high average current is important for operation of existing polarized sources as well as for future projects. The operation lifetime of the polarized electron sources is limited through decrease of the quantum efficiency. It was found that two mechanisms limit the lifetime of the negative electron affinity photocathode, which are ion backbombardment (created by the ionisation of the residual gas) and chemical poisoning of the photocathode surface by H2O and CO2 gases. In this work explanations are provided for the mechanisms which contribute to the generation of the ions and chemically active molecules and other effects which reduce the operation lifetime of the polarized electron sources. Experiments with high…

Subjects/Keywords: NEA Photakothoden Lebensdauer Vakuum; NEA Photocathode lifetime vacuum system; Physics

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

APA (6^th Edition):

Barday, R. (2007). Untersuchungen zur Lebensdauer von NEA-Photokathoden bei der Extraktion sehr hoher mittlerer Ströme. (Doctoral Dissertation). Johannes Gutenberg Universität Mainz. Retrieved from http://ubm.opus.hbz-nrw.de/volltexte/2007/1375/

Chicago Manual of Style (16^th Edition):

Barday, Roman. “Untersuchungen zur Lebensdauer von NEA-Photokathoden bei der Extraktion sehr hoher mittlerer Ströme.” 2007. Doctoral Dissertation, Johannes Gutenberg Universität Mainz. Accessed December 09, 2019. http://ubm.opus.hbz-nrw.de/volltexte/2007/1375/.

MLA Handbook (7^th Edition):

Barday, Roman. “Untersuchungen zur Lebensdauer von NEA-Photokathoden bei der Extraktion sehr hoher mittlerer Ströme.” 2007. Web. 09 Dec 2019.

Vancouver:

Barday R. Untersuchungen zur Lebensdauer von NEA-Photokathoden bei der Extraktion sehr hoher mittlerer Ströme. [Internet] [Doctoral dissertation]. Johannes Gutenberg Universität Mainz; 2007. [cited 2019 Dec 09]. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2007/1375/.

Council of Science Editors:

Barday R. Untersuchungen zur Lebensdauer von NEA-Photokathoden bei der Extraktion sehr hoher mittlerer Ströme. [Doctoral Dissertation]. Johannes Gutenberg Universität Mainz; 2007. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2007/1375/

University of Cambridge

20. Creissen, Charles Eric. Solar Driven Hydrogen Generation with Dye-Sensitised CuCrO2 Photocathodes .

Degree: 2019, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/294366

► Solar conversion of water into chemical energy carriers offers a sustainable alternative to fossil fuels. Inspired by natural processes, dye-sensitised photoelectrochemical cells provide a platform… (more)

▼ Solar conversion of water into chemical energy carriers offers a sustainable alternative to fossil fuels. Inspired by natural processes, dye-sensitised photoelectrochemical cells provide a platform for H2 generation from water. Fuel-forming photocathodes are currently limited by the small range of wide-bandgap p-type semiconductors available. The majority of previous reports have employed NiO, which displays low performance with immobilised dyes and catalysts, requiring exploration of other metal oxides. In this thesis, CuCrO2 is presented as an alternative p-type semiconductor for dye-sensitised H2 production. Synthesis and characterisation of CuCrO2 using a sol-gel method is described. First, co-immobilisation of a phosphonated diketopyrrolopyrrole dye with a Ni-bis(diphosphine) catalyst on CuCrO2 is presented as a strategy for producing a functional photocathode capable of generating H2 (Chapter 2). Photocurrent analysis and product detection revealed a high turnover number for the catalyst, outperforming an analogous NiO photoelectrode. The study serves to demonstrate the benefits of adopting delafossite structures for dye-sensitised systems. The versatility of sol-gel synthesised CuCrO2 was highlighted through immobilisation of ZnSe nanorods (NRs) (Chapter 3). Ligand-stripped ZnSe-NRs were deposited on CuCrO2 to produce the first reported ZnSe-sensitised photocathode capable of photoelectrochemical proton reduction under solar irradiation. Hydrothermal synthesis of CuCrO2 nanoparticles enabled the development of nanostructured inverse opal electrodes (IO-CuCrO2) using a bottom-up templating method (Chapter 4). These electrodes were explored as a scaffold for solar H2 production together with a molecular Ni catalyst and two different organic dyes based on perylene monoimide and diketopyrrolopyrrole chromophores. Improved activity over the mesoporous CuCrO2 films was associated with the novel morphology of the p-SC and the integration of a more suitable dye for hole injection. Photoelectrochemical analysis and a discussion of the influence of molecular components in these highly proficient electrodes provides a basis for future development of dye-sensitised CuCrO2-based photocathodes.

Subjects/Keywords: Photoelectrochemistry; Solar Fuel; Electrocatalysis; Dye-Sensitised; Photoelectrochemical Cell; Hydrogen; Artificial Photosynthesis; Catalysis; Water Splitting; Photocathode; Proton Reduction; Molecular Catalysis; p-type semiconductor; CuCrO2; Delafossite

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

APA (6^th Edition):

Creissen, C. E. (2019). Solar Driven Hydrogen Generation with Dye-Sensitised CuCrO2 Photocathodes . (Thesis). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/294366

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):

Creissen, Charles Eric. “Solar Driven Hydrogen Generation with Dye-Sensitised CuCrO2 Photocathodes .” 2019. Thesis, University of Cambridge. Accessed December 09, 2019. https://www.repository.cam.ac.uk/handle/1810/294366.

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

MLA Handbook (7^th Edition):

Creissen, Charles Eric. “Solar Driven Hydrogen Generation with Dye-Sensitised CuCrO2 Photocathodes .” 2019. Web. 09 Dec 2019.

Vancouver:

Creissen CE. Solar Driven Hydrogen Generation with Dye-Sensitised CuCrO2 Photocathodes . [Internet] [Thesis]. University of Cambridge; 2019. [cited 2019 Dec 09]. Available from: https://www.repository.cam.ac.uk/handle/1810/294366.

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

Council of Science Editors:

Creissen CE. Solar Driven Hydrogen Generation with Dye-Sensitised CuCrO2 Photocathodes . [Thesis]. University of Cambridge; 2019. Available from: https://www.repository.cam.ac.uk/handle/1810/294366

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

Loughborough University

21. Smith, Thomas. Studies of p-type semiconductor photoelectrodes for tandem solar cells.

Degree: PhD, 2014, Loughborough University

URL: https://dspace.lboro.ac.uk/2134/14522 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603054

► Photoelectrodes and photovoltaic devices have been prepared via multiple thin film deposition methods. Aerosol assisted chemical vapour deposition (AACVD), electrodeposition (ED), chemical bath deposition (CBD)… (more)

▼ Photoelectrodes and photovoltaic devices have been prepared via multiple thin film deposition methods. Aerosol assisted chemical vapour deposition (AACVD), electrodeposition (ED), chemical bath deposition (CBD) and doctor blade technique (DB) have been used to deposit binary and ternary metal oxide films on FTO glass substrates. The prepared thin films were characterised by a combination of SEM (Scanning Electron Microscopy), powder X-ray diffraction, mechanical strength tests and photochemical measurements. Nickel oxide (NiO) thin films prepared by AACVD were determined to have good mechanical strength . with a photocurrent of 7.6 μA cm-2 at 0 V and an onset potential of about 0.10 V. This contrasted with the dark current density of 0.3 μA cm-2 at 0 V. These NiO samples have very high porosity with crystalline columns evidenced by SEM. In comparison with the AACVD methodology, NiO films prepared using a combination of ED and DB show good mechanical strength but a higher photocurrent of 24 μA cm-2 at 0 V and an onset potential of about 0.10 V with a significantly greater dark current density of 7 μA cm-2 at 0 V. The characteristic features shown in the SEM are smaller pores compared to the AACVD method. Copper (II) oxide (CuO) and copper (I) oxide (Cu2O) films were fabricated by AACVD by varying the annealing temperature between 100-325°C in air using a fixed annealing time of 30 min. It was shown by photocurrent density (J-V) measurements that CuO produced at 325 °C was most stable and provided the highest photocurrent of 173 μA cm-2 at 0 V with an onset potential of about 0.23 V. The alignment of zinc oxide (ZnO) nano-rods and nano-tubes fabricated by CBD have been shown to be strongly affected by the seed layer on the FTO substrate. SEM images showed that AACVD provided the best seed layer for aligning the growth of the nano-rods perpendicular to the surface. Nano-rods were successfully altered into nano-tubes using a potassium chloride bath etching method. NiO prepared by both AACVD and the combined ED/DB method were sensitized to absorb more of the solar spectrum using AACVD to deposit CuO over the NiO. A large increase in the photocurrent was observed for the p-type photoelectrode. These p-type photoelectrode showed a photocurrent density of approximately 100 μA cm-2 at 0 V and an onset potential of 0.3 V. This photocathode was then used as a base to produce a solid state p-type solar cell. For the construction of the solid state solar cells several n-type semiconductors were used, these were ZnO, WO3 and BiVO4. WO3 and BiVO4 were successfully produced with BiVO4 proving to be the optimum choice. This cell was then studied more in depth and optimised by controlling the thickness of each layer and annealing temperatures. The best solid state solar cell produced had a Jsc of 0.541 μA cm-2 (541 nA) and a Voc of 0.14 V, TX146 made up of NiO 20 min, CuFe2O4 50 min, CuO 10 min, BiVO4 27 min, using AACVD and then annealed for 30 min at 600°C.

Subjects/Keywords: 543; Photovoltaic devices; Photoelectrodes; Aerosol assisted chemical vapour deposition; AACVD; Electrodeposition; ED; Chemical bath deposition; CBD; Doctor blade technique; DB; Scanning electron microscopy; SEM; Powder X-ray diffraction; XRD; Nickel oxide; Copper (II) oxide; CuO; Copper ferrite; CuFe2O4; Bismuth vanadate; BiVO4; Photocathode; P-type

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

APA (6^th Edition):

Smith, T. (2014). Studies of p-type semiconductor photoelectrodes for tandem solar cells. (Doctoral Dissertation). Loughborough University. Retrieved from https://dspace.lboro.ac.uk/2134/14522 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603054

Chicago Manual of Style (16^th Edition):

Smith, Thomas. “Studies of p-type semiconductor photoelectrodes for tandem solar cells.” 2014. Doctoral Dissertation, Loughborough University. Accessed December 09, 2019. https://dspace.lboro.ac.uk/2134/14522 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603054.

MLA Handbook (7^th Edition):

Smith, Thomas. “Studies of p-type semiconductor photoelectrodes for tandem solar cells.” 2014. Web. 09 Dec 2019.

Vancouver:

Smith T. Studies of p-type semiconductor photoelectrodes for tandem solar cells. [Internet] [Doctoral dissertation]. Loughborough University; 2014. [cited 2019 Dec 09]. Available from: https://dspace.lboro.ac.uk/2134/14522 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603054.

Council of Science Editors:

Smith T. Studies of p-type semiconductor photoelectrodes for tandem solar cells. [Doctoral Dissertation]. Loughborough University; 2014. Available from: https://dspace.lboro.ac.uk/2134/14522 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603054

22. Díez García, María Isabel. Preparation and study of ternary metal oxide photocathodes for solar energy conversion.

Degree: 2018, Universidad de Alicante

URL: http://hdl.handle.net/10045/74451

Subjects/Keywords: Ternary oxide; Photocathode; Water splitting; Solar energy; Photoelectrochemistry; Óxido ternario; Fotocátodo; Fotodisociación de agua; Energía solar; Fotoelectroquímica; Química Física

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

APA (6^th Edition):

Díez García, M. I. (2018). Preparation and study of ternary metal oxide photocathodes for solar energy conversion. (Thesis). Universidad de Alicante. Retrieved from http://hdl.handle.net/10045/74451

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):

Díez García, María Isabel. “Preparation and study of ternary metal oxide photocathodes for solar energy conversion.” 2018. Thesis, Universidad de Alicante. Accessed December 09, 2019. http://hdl.handle.net/10045/74451.

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

MLA Handbook (7^th Edition):

Díez García, María Isabel. “Preparation and study of ternary metal oxide photocathodes for solar energy conversion.” 2018. Web. 09 Dec 2019.

Vancouver:

Díez García MI. Preparation and study of ternary metal oxide photocathodes for solar energy conversion. [Internet] [Thesis]. Universidad de Alicante; 2018. [cited 2019 Dec 09]. Available from: http://hdl.handle.net/10045/74451.

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

Council of Science Editors:

Díez García MI. Preparation and study of ternary metal oxide photocathodes for solar energy conversion. [Thesis]. Universidad de Alicante; 2018. Available from: http://hdl.handle.net/10045/74451

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

Loughborough University

23. Smith, Thomas. Studies of p-type semiconductor photoelectrodes for tandem solar cells.

Degree: PhD, 2014, Loughborough University

URL: http://hdl.handle.net/2134/14522

► Photoelectrodes and photovoltaic devices have been prepared via multiple thin film deposition methods. Aerosol assisted chemical vapour deposition (AACVD), electrodeposition (ED), chemical bath deposition (CBD)… (more)

▼ Photoelectrodes and photovoltaic devices have been prepared via multiple thin film deposition methods. Aerosol assisted chemical vapour deposition (AACVD), electrodeposition (ED), chemical bath deposition (CBD) and doctor blade technique (DB) have been used to deposit binary and ternary metal oxide films on FTO glass substrates. The prepared thin films were characterised by a combination of SEM (Scanning Electron Microscopy), powder X-ray diffraction, mechanical strength tests and photochemical measurements. Nickel oxide (NiO) thin films prepared by AACVD were determined to have good mechanical strength . with a photocurrent of 7.6 μA cm-2 at 0 V and an onset potential of about 0.10 V. This contrasted with the dark current density of 0.3 μA cm-2 at 0 V. These NiO samples have very high porosity with crystalline columns evidenced by SEM. In comparison with the AACVD methodology, NiO films prepared using a combination of ED and DB show good mechanical strength but a higher photocurrent of 24 μA cm-2 at 0 V and an onset potential of about 0.10 V with a significantly greater dark current density of 7 μA cm-2 at 0 V. The characteristic features shown in the SEM are smaller pores compared to the AACVD method. Copper (II) oxide (CuO) and copper (I) oxide (Cu2O) films were fabricated by AACVD by varying the annealing temperature between 100-325°C in air using a fixed annealing time of 30 min. It was shown by photocurrent density (J-V) measurements that CuO produced at 325 °C was most stable and provided the highest photocurrent of 173 μA cm-2 at 0 V with an onset potential of about 0.23 V. The alignment of zinc oxide (ZnO) nano-rods and nano-tubes fabricated by CBD have been shown to be strongly affected by the seed layer on the FTO substrate. SEM images showed that AACVD provided the best seed layer for aligning the growth of the nano-rods perpendicular to the surface. Nano-rods were successfully altered into nano-tubes using a potassium chloride bath etching method. NiO prepared by both AACVD and the combined ED/DB method were sensitized to absorb more of the solar spectrum using AACVD to deposit CuO over the NiO. A large increase in the photocurrent was observed for the p-type photoelectrode. These p-type photoelectrode showed a photocurrent density of approximately 100 μA cm-2 at 0 V and an onset potential of 0.3 V. This photocathode was then used as a base to produce a solid state p-type solar cell. For the construction of the solid state solar cells several n-type semiconductors were used, these were ZnO, WO3 and BiVO4. WO3 and BiVO4 were successfully produced with BiVO4 proving to be the optimum choice. This cell was then studied more in depth and optimised by controlling the thickness of each layer and annealing temperatures. The best solid state solar cell produced had a Jsc of 0.541 μA cm-2 (541 nA) and a Voc of 0.14 V, TX146 made up of NiO 20 min, CuFe2O4 50 min, CuO 10 min, BiVO4 27 min, using AACVD and then annealed for 30 min at 600°C.

Subjects/Keywords: 543; Photovoltaic devices; Photoelectrodes; Aerosol assisted chemical vapour deposition; AACVD; Electrodeposition; ED; Chemical bath deposition; CBD; Doctor blade technique; DB; Scanning electron microscopy; SEM; Powder X-ray diffraction; XRD; Nickel oxide; Copper (II) oxide; CuO; Copper ferrite; CuFe2O4; Bismuth vanadate; BiVO4; Photocathode; P-type

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):

Smith, T. (2014). Studies of p-type semiconductor photoelectrodes for tandem solar cells. (Doctoral Dissertation). Loughborough University. Retrieved from http://hdl.handle.net/2134/14522

Chicago Manual of Style (16^th Edition):

Smith, Thomas. “Studies of p-type semiconductor photoelectrodes for tandem solar cells.” 2014. Doctoral Dissertation, Loughborough University. Accessed December 09, 2019. http://hdl.handle.net/2134/14522.

MLA Handbook (7^th Edition):

Smith, Thomas. “Studies of p-type semiconductor photoelectrodes for tandem solar cells.” 2014. Web. 09 Dec 2019.

Vancouver:

Smith T. Studies of p-type semiconductor photoelectrodes for tandem solar cells. [Internet] [Doctoral dissertation]. Loughborough University; 2014. [cited 2019 Dec 09]. Available from: http://hdl.handle.net/2134/14522.

Council of Science Editors:

Smith T. Studies of p-type semiconductor photoelectrodes for tandem solar cells. [Doctoral Dissertation]. Loughborough University; 2014. Available from: http://hdl.handle.net/2134/14522

Indian Institute of Science

24. Garai, Baishali. Development and Performance Study of Thick Gas Electron Multiplier (THGEM) Based Radiation Detector.

Degree: 2013, Indian Institute of Science

URL: http://etd.iisc.ernet.in/2005/3440 ; http://etd.iisc.ernet.in/abstracts/4307/G25961-Abs.pdf

► Radiations can be classified as either ionizing or non-ionizing according to whether it ionizes or does not ionize the medium through which they propagate. X-rays… (more)

▼ Radiations can be classified as either ionizing or non-ionizing according to whether it ionizes or does not ionize the medium through which they propagate. X-rays photons and gamma rays are the typical examples of ionizing radiations whereas radiowave, heat or visible light are examples of non ionizing radiations. UV photons have some features of both ionizing and non-ionizing radiation. Both ionizing and non-ionizing radiation can be harmful to living organisms and to the natural environment. Hence the detection and measurement of radiation is very important for the well being of living organisms as well as the natural environment. Not only for safety reasons, have radiation detectors found their applications in various fields including medical physics, nuclear and particle physics, astronomy and homeland security. Industrial sectors that use radiation detection include medical imaging, security and baggage scanning, the nuclear power industry and defense. Gas electron multiplier (GEM) is one of the most successful representatives of gaseous detectors used for UV photon and X-ray photon detection. Recently there is a growing demand for large area photon detectors with sensitivity reaching to the level of single photon. They are used in spectroscopy and imaging in astronomy high energy physics experiments etc. Thick GEM (THGEM) is a mechanical expansion of standard GEM. It has all the necessary requirements needed for large area detector and offers a multiplication factor that permits efficient detection of light. Hence, the development and performance study of THGEM based radiation detector is chosen as the topic of study in the present thesis. The initial part of the thesis contains simulation studies carried out for the understanding the working of the detector and the effect of various design parameters of THGEM for the above said applications. Different steps for the fabrication of THGEM and the technical challenges faced during the process are discussed. In the view of application of the fabricated THGEM for UV photon detection, cesium iodide photocathode is prepared using thin film technology and characterized. The performance of the photocathode under various operating conditions is studied in terms of its photoemission property. The effect of vacuum treatment on the photoemission property of the photocathode exposed to moist air is studied in detail. A major portion of this thesis focuses on maximizing the detection efficiency of the UV photon detector realized using the fabricated THGEM coupled with the cesium iodide photocathode. Simulations are used at different stages to interpret the experimental observations. The electron spectrum obtained from the detector under study was analyzed. The dependence of secondary effect like photon feedback on the operating parameters is also discussed. The last portion of the thesis deals with the application of THGEM as an X-ray detector. The performance is evaluated in terms of the gain and energy resolution achieved. The thesis is organized as follows: Chapter… Advisors/Committee Members: Rajanna, K.

Subjects/Keywords: Radiation Detectors; Thick Gas Electron Multiplier (THGEM) Radiation Detectors; Ionizing Radiation Detectors; Thick Gas Electron Multiplier UV Photon Detectors; Thick Gas Electron Multiplier X-Ray Detectors; Gas Electron Multiplier (GEM); Thick Gas Electron Multiplier Detectors - Simulation; UV Photon Detectors; X-Ray Detectors; Gas Ionization Detectors; UV Photocathode; Gaseous Photomultipliers; THICK GEMs; Instrumentation

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APA (6^th Edition):

Garai, B. (2013). Development and Performance Study of Thick Gas Electron Multiplier (THGEM) Based Radiation Detector. (Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ernet.in/2005/3440 ; http://etd.iisc.ernet.in/abstracts/4307/G25961-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):

Garai, Baishali. “Development and Performance Study of Thick Gas Electron Multiplier (THGEM) Based Radiation Detector.” 2013. Thesis, Indian Institute of Science. Accessed December 09, 2019. http://etd.iisc.ernet.in/2005/3440 ; http://etd.iisc.ernet.in/abstracts/4307/G25961-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):

Garai, Baishali. “Development and Performance Study of Thick Gas Electron Multiplier (THGEM) Based Radiation Detector.” 2013. Web. 09 Dec 2019.

Vancouver:

Garai B. Development and Performance Study of Thick Gas Electron Multiplier (THGEM) Based Radiation Detector. [Internet] [Thesis]. Indian Institute of Science; 2013. [cited 2019 Dec 09]. Available from: http://etd.iisc.ernet.in/2005/3440 ; http://etd.iisc.ernet.in/abstracts/4307/G25961-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:

Garai B. Development and Performance Study of Thick Gas Electron Multiplier (THGEM) Based Radiation Detector. [Thesis]. Indian Institute of Science; 2013. Available from: http://etd.iisc.ernet.in/2005/3440 ; http://etd.iisc.ernet.in/abstracts/4307/G25961-Abs.pdf

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

25. Kirschner, Hans. Spectral quantum efficency measurements on Cs-K-Sb photocathodes for the energy-recovery linac test facility bERLinPro.

Degree: 2017, Humboldt University of Berlin

URL: http://edoc.hu-berlin.de/docviews/abstract.php?id=43480 ; http://edoc.hu-berlin.de/master/kirschner-hans-2017-01-09/PDF/kirschner.pdf ; http://www.nbn-resolving.de/urn:nbn:de:kobv:11-100246973

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Cs-K-Sb Photokathoden sind aufgrund hoher Quanteneffizienzen im sichtbaren Spektrum vielversprechende Kandidaten als Elektronenquellen für zukünftige Synchrotron-Lichtquellen, wie die Energy-Recovery Linac (ERL) Testanlage bERLinPro. Diese Masterarbeit… (more)

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Cs-K-Sb Photokathoden sind aufgrund hoher Quanteneffizienzen im sichtbaren Spektrum vielversprechende Kandidaten als Elektronenquellen für zukünftige Synchrotron-Lichtquellen, wie die Energy-Recovery Linac (ERL) Testanlage bERLinPro. Diese Masterarbeit beschäftigt sich mit der Inbetriebnahme eines Versuchsaufbaus, der in der Lage ist die spektrale Quanteneffizienz von Kathoden im Bereich von 370 bis 700 nm zu messen, den Photostrom während des Photokathodenwachstums zu überwachen und die Kathodenlebensdauer bei 515 nm zu messen. Mit diesem Aufbau wurden 5 Photokathoden charakterisiert, um das Wachstum besser zu verstehen und zu optimieren. Neben der spektralen Quanteneffizienz konnte die mittlere Lebensdauer der Kathoden bei 515 nm auf weniger als einen Tag bestimmt werden. Ein Scan über die Oberfläche der Kathode zeigt eine unregelmäßige Verteilung der Quanteneffizienz bei 515 nm. Da die Photokathoden in einer supraleitenden Umgebung eingesetzt werden, wurde eine Kathode auf -120°C herunter gekühlt, während die spektrale Quanteneffizienz gemessen wurde. Es zeigt sich, dass niedrige Temperaturen keinen signifikanten Einfluss auf die Quanteneffizienz haben. Mit Hilfe des Spicer Modells konnten zwei verschiedene Austrittsarbeiten aus den spektralen Quanteneffizienzen extrahiert werden. Der Wert der ersten Arbeitsfunktion ergibt sich zu 1,96 +/- 0,02 eV. Weiterhin wird gezeigt, dass die Quanteneffizienz bei 515 nm hauptsächlich von der zweiten Austrittsarbeit abhängt. So leistet der experimentelle Aufbau einerseits einen wichtigen Beitrag für das bERLinPro Photokathoden R&D Projekt und ist andererseits ein wichtiges Hilfsmittel um Photokathoden zu charakterisieren.

Photocathodes made of Cs-K-Sb are promising candidates as electron sources for future synchrotron light sources like the energy recovery linac (ERL) test facility bERLinPro, since they provide high quantum efficiencies in the visible spectrum. This master thesis deals with the commissioning of an experimental setup, which is able to measure the spectral quantum efficiency of cathodes from 370 to 700 nm, to monitor the photocurrent during the photocathode growth process and to measure the cathodes lifetime at 515 nm. With this setup, 5 photocathodes were characterized, in order to better understand and to optimize the growth and the preparation process. Besides the spectral quantum efficiency, the mean lifetime of the cathodes at 515 nm could be determined to less than one day. A mapping over the cathode's surface shows an irregular distribution of the quantum efficiency at 515 nm. Since the photocathodes will be working in a superconducting environement, one cathode was cooled down to -120°C, while measuring the spectral quantum efficiency. It is shown, that low temperatures had no significant influence on the quantum efficiency. Two different work functions could be extracted by fitting each measured spectral quantum efficiency to the so called Spicer model. The value of the …

Advisors/Committee Members: Jankowiak, Andreas, Matveenko, Aleksandr.

Subjects/Keywords: Physik; ERL; ERL; spektrale Quantueneffizienz; Quanteneffizienz; Photokathode; Kathode; Cs-K-Sb; bERLinPro; Austrittsarbeit; Energy Recovery Linac; spectral quantum efficiency; quantum efficiency; photocathode; cathode; Cs-K-Sb; bERLinPro; work function; Energy Recovery Linac; ddc:530

…Basically, the SRF photoinjector consists out of a photocathode, a superconducting (… …The photocathode is irradiated by a laser beam inducing the photoelectric effect, in order… …photoelectrical effect on the photocathode. The electrons are accelerated by the SC gun cavity and… …photocathode of high quantum efficiency and long lifetime is necessary to ensure stable operation… …repetition rate of the laser and qb is the bunch charge, which mainly depends on the photocathode…

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

APA (6^th Edition):

Kirschner, H. (2017). Spectral quantum efficency measurements on Cs-K-Sb photocathodes for the energy-recovery linac test facility bERLinPro. (Masters Thesis). Humboldt University of Berlin. Retrieved from http://edoc.hu-berlin.de/docviews/abstract.php?id=43480 ; http://edoc.hu-berlin.de/master/kirschner-hans-2017-01-09/PDF/kirschner.pdf ; http://www.nbn-resolving.de/urn:nbn:de:kobv:11-100246973

Chicago Manual of Style (16^th Edition):

Kirschner, Hans. “Spectral quantum efficency measurements on Cs-K-Sb photocathodes for the energy-recovery linac test facility bERLinPro.” 2017. Masters Thesis, Humboldt University of Berlin. Accessed December 09, 2019. http://edoc.hu-berlin.de/docviews/abstract.php?id=43480 ; http://edoc.hu-berlin.de/master/kirschner-hans-2017-01-09/PDF/kirschner.pdf ; http://www.nbn-resolving.de/urn:nbn:de:kobv:11-100246973.

MLA Handbook (7^th Edition):

Kirschner, Hans. “Spectral quantum efficency measurements on Cs-K-Sb photocathodes for the energy-recovery linac test facility bERLinPro.” 2017. Web. 09 Dec 2019.

Vancouver:

Kirschner H. Spectral quantum efficency measurements on Cs-K-Sb photocathodes for the energy-recovery linac test facility bERLinPro. [Internet] [Masters thesis]. Humboldt University of Berlin; 2017. [cited 2019 Dec 09]. Available from: http://edoc.hu-berlin.de/docviews/abstract.php?id=43480 ; http://edoc.hu-berlin.de/master/kirschner-hans-2017-01-09/PDF/kirschner.pdf ; http://www.nbn-resolving.de/urn:nbn:de:kobv:11-100246973.

Council of Science Editors:

Kirschner H. Spectral quantum efficency measurements on Cs-K-Sb photocathodes for the energy-recovery linac test facility bERLinPro. [Masters Thesis]. Humboldt University of Berlin; 2017. Available from: http://edoc.hu-berlin.de/docviews/abstract.php?id=43480 ; http://edoc.hu-berlin.de/master/kirschner-hans-2017-01-09/PDF/kirschner.pdf ; http://www.nbn-resolving.de/urn:nbn:de:kobv:11-100246973

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