+publisher:"University of Florida" +contributor:("SO,FRANKY FAT KEI")

University of Florida

1. Yang, Chenchen. High Efficiency Perovskite Solar Cells with Long Operation Lifetime.

Degree: MS, Materials Science and Engineering, 2015, University of Florida

► The rapid development of perovskite solar cell has gained enormous attention of the photovoltaic research community worldwide. Due to its excellent light absorption and good… (more)

Subjects/Keywords: Current density; Diffuse scleroderma; Electrodes; Electrons; Narrative devices; Oxygen; Performance photography; Perovskites; Photovoltaic cells; Power efficiency; energy – lifetime – perovskite – solar – stability

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APA (6^th Edition):

Yang, C. (2015). High Efficiency Perovskite Solar Cells with Long Operation Lifetime. (Masters Thesis). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0048944

Chicago Manual of Style (16^th Edition):

Yang, Chenchen. “High Efficiency Perovskite Solar Cells with Long Operation Lifetime.” 2015. Masters Thesis, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0048944.

MLA Handbook (7^th Edition):

Yang, Chenchen. “High Efficiency Perovskite Solar Cells with Long Operation Lifetime.” 2015. Web. 17 Apr 2021.

Vancouver:

Yang C. High Efficiency Perovskite Solar Cells with Long Operation Lifetime. [Internet] [Masters thesis]. University of Florida; 2015. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0048944.

Council of Science Editors:

Yang C. High Efficiency Perovskite Solar Cells with Long Operation Lifetime. [Masters Thesis]. University of Florida; 2015. Available from: https://ufdc.ufl.edu/UFE0048944

2. Yu, Hyeonggeun. Vertical Organic Thin Film Transistors Fabricated by Perforated Metallic Electrodes.

Degree: PhD, Materials Science and Engineering, 2015, University of Florida

URL: https://ufdc.ufl.edu/UFE0049030

► Organic Thin-Film transistors (OTFTs) have been a fervent research topic in the past 20 years due to the low material cost, easy processing, and mechanical… (more)

Subjects/Keywords: Drains; Electric current; Electric fields; Electric potential; Electrodes; Electrons; Field effect transistors; Narrative devices; Phototransistors; Transistors; infrared – ofet – phototransistor – pmbt – transistor

…91 9 Abstract of Dissertation Presented to the Graduate School of the University of… …Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy…

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APA (6^th Edition):

Yu, H. (2015). Vertical Organic Thin Film Transistors Fabricated by Perforated Metallic Electrodes. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0049030

Chicago Manual of Style (16^th Edition):

Yu, Hyeonggeun. “Vertical Organic Thin Film Transistors Fabricated by Perforated Metallic Electrodes.” 2015. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0049030.

MLA Handbook (7^th Edition):

Yu, Hyeonggeun. “Vertical Organic Thin Film Transistors Fabricated by Perforated Metallic Electrodes.” 2015. Web. 17 Apr 2021.

Vancouver:

Yu H. Vertical Organic Thin Film Transistors Fabricated by Perforated Metallic Electrodes. [Internet] [Doctoral dissertation]. University of Florida; 2015. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0049030.

Council of Science Editors:

Yu H. Vertical Organic Thin Film Transistors Fabricated by Perforated Metallic Electrodes. [Doctoral Dissertation]. University of Florida; 2015. Available from: https://ufdc.ufl.edu/UFE0049030

3. Klump, Erik D. Morphological Effects on Device Performance in Organic Solar Cells.

Degree: PhD, Materials Science and Engineering, 2016, University of Florida

URL: https://ufdc.ufl.edu/UFE0050703

► Organic photovoltaics (OPVs) have attracted significant research interest because of their ease of processing and compatibility with flexible substrates, allowing for the possibility of low-cost… (more)

Subjects/Keywords: Dyes; Electrons; Excitons; Fullerenes; Heterojunctions; Molecules; Narrative devices; Permittivity; Photovoltaic cells; Polymers; dielectric – organic – photovoltaics – semiconductor – spectroscopy

…Voltage 11 Abstract of Dissertation Presented to the Graduate School of the University of… …Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy…

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APA (6^th Edition):

Klump, E. D. (2016). Morphological Effects on Device Performance in Organic Solar Cells. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0050703

Chicago Manual of Style (16^th Edition):

Klump, Erik D. “Morphological Effects on Device Performance in Organic Solar Cells.” 2016. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0050703.

MLA Handbook (7^th Edition):

Klump, Erik D. “Morphological Effects on Device Performance in Organic Solar Cells.” 2016. Web. 17 Apr 2021.

Vancouver:

Klump ED. Morphological Effects on Device Performance in Organic Solar Cells. [Internet] [Doctoral dissertation]. University of Florida; 2016. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0050703.

Council of Science Editors:

Klump ED. Morphological Effects on Device Performance in Organic Solar Cells. [Doctoral Dissertation]. University of Florida; 2016. Available from: https://ufdc.ufl.edu/UFE0050703

University of Florida

4. Lai, Tzung-Han. Delocalization of Charge Transfer Excitons in Polymer Solar Cells.

Degree: PhD, Materials Science and Engineering, 2015, University of Florida

URL: https://ufdc.ufl.edu/UFE0047672

► Organic photovoltaics (OPVs), due to its light weight, mechanical flexibility and solution processability, have been the focus of research for the past decade. Power conversion… (more)

Subjects/Keywords: Annealing; Charge transfer; Electric fields; Electrons; Energy gaps; Excitons; Fullerenes; Permittivity; Photovoltaic cells; Polymers; organic – photovoltaic – semiconductor

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APA (6^th Edition):

Lai, T. (2015). Delocalization of Charge Transfer Excitons in Polymer Solar Cells. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0047672

Chicago Manual of Style (16^th Edition):

Lai, Tzung-Han. “Delocalization of Charge Transfer Excitons in Polymer Solar Cells.” 2015. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0047672.

MLA Handbook (7^th Edition):

Lai, Tzung-Han. “Delocalization of Charge Transfer Excitons in Polymer Solar Cells.” 2015. Web. 17 Apr 2021.

Vancouver:

Lai T. Delocalization of Charge Transfer Excitons in Polymer Solar Cells. [Internet] [Doctoral dissertation]. University of Florida; 2015. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0047672.

Council of Science Editors:

Lai T. Delocalization of Charge Transfer Excitons in Polymer Solar Cells. [Doctoral Dissertation]. University of Florida; 2015. Available from: https://ufdc.ufl.edu/UFE0047672

University of Florida

5. Liu, Shuyi. Toward Solution-Processed Organic Light Emitting Diodes Electrode, Transport Layers, and Degradation Study.

Degree: PhD, Materials Science and Engineering, 2015, University of Florida

URL: https://ufdc.ufl.edu/UFE0047798

► Solution processed organic light-emitting diodes (OLEDs) have attracted much research attentions recently due to their great potential of lowering the fabrication cost. Although OLEDs with… (more)

Subjects/Keywords: Ablation techniques; Electric potential; Electrodes; Excitons; Metal oxides; Passivity; Polymers; Quenching; Signals; Solvents; degradation – metal-oxide – oled – silver-nanowire – solution-process

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APA (6^th Edition):

Liu, S. (2015). Toward Solution-Processed Organic Light Emitting Diodes Electrode, Transport Layers, and Degradation Study. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0047798

Chicago Manual of Style (16^th Edition):

Liu, Shuyi. “Toward Solution-Processed Organic Light Emitting Diodes Electrode, Transport Layers, and Degradation Study.” 2015. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0047798.

MLA Handbook (7^th Edition):

Liu, Shuyi. “Toward Solution-Processed Organic Light Emitting Diodes Electrode, Transport Layers, and Degradation Study.” 2015. Web. 17 Apr 2021.

Vancouver:

Liu S. Toward Solution-Processed Organic Light Emitting Diodes Electrode, Transport Layers, and Degradation Study. [Internet] [Doctoral dissertation]. University of Florida; 2015. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0047798.

Council of Science Editors:

Liu S. Toward Solution-Processed Organic Light Emitting Diodes Electrode, Transport Layers, and Degradation Study. [Doctoral Dissertation]. University of Florida; 2015. Available from: https://ufdc.ufl.edu/UFE0047798

University of Florida

6. Shen, Yu. Ultra-Thin, Highly Uniform, Sprayed Single Wall Carbon Nanotube Films for Vertical Field Effect Transistors.

Degree: PhD, Physics, 2014, University of Florida

URL: https://ufdc.ufl.edu/UFE0047170

► The operating mechanism of the carbon nanotube enabled vertical field effect transistor (CN-VFET) requires gate field access to the channel layer without too much screening… (more)

Subjects/Keywords: Carbon nanotubes; Dielectric materials; Electric current; Electrodes; Emission spectra; Fluorescence; Inks; Nanotubes; Pixels; Surfactants; fluorescence – ink – nanotube – spray – transistors – ultrathin

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APA (6^th Edition):

Shen, Y. (2014). Ultra-Thin, Highly Uniform, Sprayed Single Wall Carbon Nanotube Films for Vertical Field Effect Transistors. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0047170

Chicago Manual of Style (16^th Edition):

Shen, Yu. “Ultra-Thin, Highly Uniform, Sprayed Single Wall Carbon Nanotube Films for Vertical Field Effect Transistors.” 2014. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0047170.

MLA Handbook (7^th Edition):

Shen, Yu. “Ultra-Thin, Highly Uniform, Sprayed Single Wall Carbon Nanotube Films for Vertical Field Effect Transistors.” 2014. Web. 17 Apr 2021.

Vancouver:

Shen Y. Ultra-Thin, Highly Uniform, Sprayed Single Wall Carbon Nanotube Films for Vertical Field Effect Transistors. [Internet] [Doctoral dissertation]. University of Florida; 2014. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0047170.

Council of Science Editors:

Shen Y. Ultra-Thin, Highly Uniform, Sprayed Single Wall Carbon Nanotube Films for Vertical Field Effect Transistors. [Doctoral Dissertation]. University of Florida; 2014. Available from: https://ufdc.ufl.edu/UFE0047170

University of Florida

7. Constantinou, Iordania. The Effects of Materials and Processing on Organic Photovoltaics.

Degree: PhD, Materials Science and Engineering, 2016, University of Florida

URL: https://ufdc.ufl.edu/UFE0049732

► Organic semiconductors (OSCs) are a relatively new class of materials gaining attention as a possible replacement for traditional semiconductors due to their unique electronic and… (more)

Subjects/Keywords: Annealing; Charge carriers; Electric current; Electrons; Excitons; Fullerenes; Heterojunctions; Narrative devices; Photovoltaic cells; Polymers; charge-transfer – organic – photogeneration – photostability

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APA (6^th Edition):

Constantinou, I. (2016). The Effects of Materials and Processing on Organic Photovoltaics. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0049732

Chicago Manual of Style (16^th Edition):

Constantinou, Iordania. “The Effects of Materials and Processing on Organic Photovoltaics.” 2016. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0049732.

MLA Handbook (7^th Edition):

Constantinou, Iordania. “The Effects of Materials and Processing on Organic Photovoltaics.” 2016. Web. 17 Apr 2021.

Vancouver:

Constantinou I. The Effects of Materials and Processing on Organic Photovoltaics. [Internet] [Doctoral dissertation]. University of Florida; 2016. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0049732.

Council of Science Editors:

Constantinou I. The Effects of Materials and Processing on Organic Photovoltaics. [Doctoral Dissertation]. University of Florida; 2016. Available from: https://ufdc.ufl.edu/UFE0049732

University of Florida

8. Mudrick, John P. Engineered Film Growth and Interfaces in Small Molecule Organic Photovoltaic Cells.

Degree: PhD, Materials Science and Engineering, 2014, University of Florida

URL: https://ufdc.ufl.edu/UFE0046546

► Organic photovoltaic (OPV) devices have gained significant academic interest over the past three decades because of their potential as a low cost energy source with… (more)

Subjects/Keywords: Absorption spectra; Electric current; Electric potential; Electrons; Excitons; Heterojunctions; Molecules; Naphthacenes; Narrative devices; Photovoltaic cells; materials – organic – photovoltaic – semiconductor – solar

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APA (6^th Edition):

Mudrick, J. P. (2014). Engineered Film Growth and Interfaces in Small Molecule Organic Photovoltaic Cells. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0046546

Chicago Manual of Style (16^th Edition):

Mudrick, John P. “Engineered Film Growth and Interfaces in Small Molecule Organic Photovoltaic Cells.” 2014. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0046546.

MLA Handbook (7^th Edition):

Mudrick, John P. “Engineered Film Growth and Interfaces in Small Molecule Organic Photovoltaic Cells.” 2014. Web. 17 Apr 2021.

Vancouver:

Mudrick JP. Engineered Film Growth and Interfaces in Small Molecule Organic Photovoltaic Cells. [Internet] [Doctoral dissertation]. University of Florida; 2014. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0046546.

Council of Science Editors:

Mudrick JP. Engineered Film Growth and Interfaces in Small Molecule Organic Photovoltaic Cells. [Doctoral Dissertation]. University of Florida; 2014. Available from: https://ufdc.ufl.edu/UFE0046546

University of Florida

9. Youn, Wooram. Light Extraction of Organic Light-Emitting Diodes Using Corrugated Structure.

Degree: PhD, Materials Science and Engineering, 2015, University of Florida

URL: https://ufdc.ufl.edu/UFE0047775

► Light extraction is critical to the efficiency of organic light-emitting diodes (OLEDs). Because of the internal reflection, only 20~30% of generated light in OLEDs is… (more)

Subjects/Keywords: Antinodes; Electrons; Light refraction; Periodicity; Photonics; Quantum efficiency; Sapphire; Wave diffraction; Waveguides; Wavelengths; extraction – light

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APA (6^th Edition):

Youn, W. (2015). Light Extraction of Organic Light-Emitting Diodes Using Corrugated Structure. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0047775

Chicago Manual of Style (16^th Edition):

Youn, Wooram. “Light Extraction of Organic Light-Emitting Diodes Using Corrugated Structure.” 2015. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0047775.

MLA Handbook (7^th Edition):

Youn, Wooram. “Light Extraction of Organic Light-Emitting Diodes Using Corrugated Structure.” 2015. Web. 17 Apr 2021.

Vancouver:

Youn W. Light Extraction of Organic Light-Emitting Diodes Using Corrugated Structure. [Internet] [Doctoral dissertation]. University of Florida; 2015. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0047775.

Council of Science Editors:

Youn W. Light Extraction of Organic Light-Emitting Diodes Using Corrugated Structure. [Doctoral Dissertation]. University of Florida; 2015. Available from: https://ufdc.ufl.edu/UFE0047775

University of Florida

10. Nasrollahi, Zahra. Spectroscopoic Studies of Polymers in Transmissive/Absorptive Electrochromic Devices, and Doped Graphite.

Degree: PhD, Physics, 2014, University of Florida

URL: https://ufdc.ufl.edu/UFE0045420

► Electrochromic polymers (ECPs) exhibit reversible optical modulation in a wide spectral range as a function of an externally applied voltage. In this work, ECPs have… (more)

Subjects/Keywords: Charge carriers; Conductivity; Dielectric materials; Doping; Electronics; Electrons; Graphite; Polymers; Reflectance; Temperature dependence; electrochromic – polymer – transmissive

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APA (6^th Edition):

Nasrollahi, Z. (2014). Spectroscopoic Studies of Polymers in Transmissive/Absorptive Electrochromic Devices, and Doped Graphite. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045420

Chicago Manual of Style (16^th Edition):

Nasrollahi, Zahra. “Spectroscopoic Studies of Polymers in Transmissive/Absorptive Electrochromic Devices, and Doped Graphite.” 2014. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0045420.

MLA Handbook (7^th Edition):

Nasrollahi, Zahra. “Spectroscopoic Studies of Polymers in Transmissive/Absorptive Electrochromic Devices, and Doped Graphite.” 2014. Web. 17 Apr 2021.

Vancouver:

Nasrollahi Z. Spectroscopoic Studies of Polymers in Transmissive/Absorptive Electrochromic Devices, and Doped Graphite. [Internet] [Doctoral dissertation]. University of Florida; 2014. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0045420.

Council of Science Editors:

Nasrollahi Z. Spectroscopoic Studies of Polymers in Transmissive/Absorptive Electrochromic Devices, and Doped Graphite. [Doctoral Dissertation]. University of Florida; 2014. Available from: https://ufdc.ufl.edu/UFE0045420

University of Florida

11. Wang, Po-Hsiang. Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors.

Degree: PhD, Physics, 2013, University of Florida

URL: https://ufdc.ufl.edu/UFE0045311

► Carbon nanotube enabled vertical field transistor (CN-VFET) was developed as a new class of transistors with novel architecture that enables high density circuitry as well… (more)

▼ Carbon nanotube enabled vertical field transistor (CN-VFET) was developed as a new class of transistors with novel architecture that enables high density circuitry as well as delivers industrially relevant performance. This new design took advantage of using carbon nanotube thin films as transparent electrodes, enabling low-cost processing and high transparency. These CN-VFETs and their relatives show great promise for the next generation of electronics. N-channel CN-VFETs based on a solution deposited ZnO nanoparticle thin film as the channel material were demonstrated. The devices exhibit on/off ratios approaching 10⁴ with output current densities exceeding 60 mA/cm². the modulation of the Schottky barrier formed at carbon nanotube/silicon heteronjunctions was explored using ionic liquid as gate dielectric. The influence of interface states at the interface were also studied via silicon surface oxidation as the means of surface passivation. The general results with proper surface passivation showed a modulation of 10³ – 10⁴ at gate voltages of ± 0.4V in either forward or reverse bias. Temperature dependence of the characteristics of a carbon nanotube enabled vertical field transistor (CN-VFET) had been investigated in detail. Channel layers with moderate and high mobility organic semiconductors have been fabricated and characterized at different temperatures. Results of high mobility semiconductors show that CN-VFETs operate with different principles from conventional field effect transistors (FETs) that the device operation is most likely dominated by carrier injection at the interface of the source and channel rather than the modulation of carrier transport inside the channel layer. We also demonstrated silicon based CN-VFETs. Unlike previous CN-VFETs, a single crystal silicon wafer is used as the channel layer and devices with a top gate dielectric were fabricated. The device exhibit a current on/off ratio of nearly 10⁵ with an on current density exceeding 5 A/cm² over a drain voltage of 2 V. ( en ) Advisors/Committee Members: Rinzler, Andrew Gabriel (committee chair), Hershfield, Selman Philip (committee member), Hebard, Arthur F (committee member), Tanner, David B (committee member), So, Franky Fat Kei (committee member).

Subjects/Keywords: Carbon nanotubes; Current density; Electric current; Electric potential; Electrodes; Graphene; Nanotubes; Silicon; Thin films; Transistors; nanotube – vfet – zno

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APA (6^th Edition):

Wang, P. (2013). Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045311

Chicago Manual of Style (16^th Edition):

Wang, Po-Hsiang. “Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors.” 2013. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0045311.

MLA Handbook (7^th Edition):

Wang, Po-Hsiang. “Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors.” 2013. Web. 17 Apr 2021.

Vancouver:

Wang P. Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0045311.

Council of Science Editors:

Wang P. Demonstration of Inorganic Carbon Nanotube Enabled Vertical Field Effect Transistors. [Doctoral Dissertation]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0045311

University of Florida

12. Goswami, Subhadip. Organometallic Pi-Conjugated Materials Fundamental Investigations and Exploring Applications in Optoelectronics.

Degree: PhD, Chemistry, 2015, University of Florida

URL: https://ufdc.ufl.edu/UFE0049081

► This dissertation is focused on synthesis and optoelectronic properties of pi conjugated organometallic polymers and small molecules for non-linear optical property and bulk heterojunction solar… (more)

Subjects/Keywords: Absorption spectra; Argon; Chromophores; Fluorescence; Ground state; Ligands; Photons; Platinum; Polymers; Solvents; chromophores

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APA (6^th Edition):

Goswami, S. (2015). Organometallic Pi-Conjugated Materials Fundamental Investigations and Exploring Applications in Optoelectronics. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0049081

Chicago Manual of Style (16^th Edition):

Goswami, Subhadip. “Organometallic Pi-Conjugated Materials Fundamental Investigations and Exploring Applications in Optoelectronics.” 2015. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0049081.

MLA Handbook (7^th Edition):

Goswami, Subhadip. “Organometallic Pi-Conjugated Materials Fundamental Investigations and Exploring Applications in Optoelectronics.” 2015. Web. 17 Apr 2021.

Vancouver:

Goswami S. Organometallic Pi-Conjugated Materials Fundamental Investigations and Exploring Applications in Optoelectronics. [Internet] [Doctoral dissertation]. University of Florida; 2015. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0049081.

Council of Science Editors:

Goswami S. Organometallic Pi-Conjugated Materials Fundamental Investigations and Exploring Applications in Optoelectronics. [Doctoral Dissertation]. University of Florida; 2015. Available from: https://ufdc.ufl.edu/UFE0049081

University of Florida

13. Petterson, Maureen K. Nanostructured Carbon Nanotube Schottky Junction Solar Cells.

Degree: PhD, Physics, 2013, University of Florida

URL: https://ufdc.ufl.edu/UFE0045926

► Research on photovoltaic cells has been ongoing for numerous decades, yet only a few device structures have passed the test of affordability, longevity, and efficiency.… (more)

▼ Research on photovoltaic cells has been ongoing for numerous decades, yet only a few device structures have passed the test of affordability, longevity, and efficiency. Volatile markets, decreasing resources, and a penchant for innovation fuel the continued research of different architectures utilizing various organic and inorganic materials. Concomitant with an increase in solar cell efficiency is a deeper understanding of the underlying physical processes present in such devices, something which benefits all scientific fields. This dissertation explores and exploits the physical processes uncovered during experiments aimed at improving solar cells efficiency through surface texturing. Not only do our modifications increase device efficiency, but these advances can be implemented in other semiconductor based devices. Silicon nanowires have long been known for their excellent antireflection properties, but have suffered substantially from recombination at the surface, relegating them to academic and industrial research projects. Nonetheless, progress has been made in alleviating issues plaguing silicon nanowire devices. Here, we deposit a disperse carbon nanotube network on tops of silicon nanowires to produce a high performing solar cell. Previous experiments on carbon nanotube- silicon solar cells made use of an ionic liquid to modulate the nanotube Fermi level via electronic gating. This modulation changed the Schottky barrier height of the device and decreased the carbon nanotube film resistance, leading to power conversion efficiencies of up to 12% for a gate voltage of -0.75V. Further experiments uncovered an additional mechanism in which the ionic liquid induced and inversion layer within the silicon, greatly facilitating hole extraction by repelling electrons from the silicon surface (and consequently reducing recombination). We exploit this induced inversion layer within our silicon nanowire solar cells and show a greatly increased power conversion efficiency of over 15%, the highest reported efficiency for silicon nanowire based devices. We also investigate the physical and chemical processes responsible for degradation and subsequently use advanced passivation techniques to alleviate these losses. Specifically, deposition of aluminum oxide via atomic layer deposition creates a high quality, conformal, dielectric layer that inhibits electrochemical reactions between the ionic liquid and the silicon, leading to minimal reduction in performance as the gate voltage is applied. We also show that contamination of the ionic liquid with oxygen or water vapor reduced the electrochemical window, leading to redox reactions for gate voltages previously thought to be well within the electrochemical window. Controlling for these two degradation paths, we show stable performance of our electronically gated carbon nanotube on silicon solar cells. These improvements are not applicable only to our devices, but have implications for many liquid electrolyte devices, most notably the liquid junction cells research in the… Advisors/Committee Members: Rinzler, Andrew Gabriel (committee chair), Biswas, Amlan (committee member), Stanton, Christopher Jay (committee member), Tanner, David B (committee member), So, Franky Fat Kei (committee member).

Subjects/Keywords: Carbon nanotubes; Electric current; Electric potential; Graphene; Ionic liquids; Nanotubes; Nanowires; Photovoltaic cells; Semiconductors; Silicon; nanotubes – photovoltaics – schottky

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APA (6^th Edition):

Petterson, M. K. (2013). Nanostructured Carbon Nanotube Schottky Junction Solar Cells. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045926

Chicago Manual of Style (16^th Edition):

Petterson, Maureen K. “Nanostructured Carbon Nanotube Schottky Junction Solar Cells.” 2013. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0045926.

MLA Handbook (7^th Edition):

Petterson, Maureen K. “Nanostructured Carbon Nanotube Schottky Junction Solar Cells.” 2013. Web. 17 Apr 2021.

Vancouver:

Petterson MK. Nanostructured Carbon Nanotube Schottky Junction Solar Cells. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0045926.

Council of Science Editors:

Petterson MK. Nanostructured Carbon Nanotube Schottky Junction Solar Cells. [Doctoral Dissertation]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0045926

University of Florida

14. Lee, Jae Woong. Solution Processed Infrared Photodetector Based on Quantum Dots with Photocurrent Amplification.

Degree: PhD, Materials Science and Engineering, 2013, University of Florida

URL: https://ufdc.ufl.edu/UFE0046244

Subjects/Keywords: Dark current; Electric current; Electric potential; Electrons; Nanocrystals; Photometers; Photons; Quantum dots; Quantum efficiency; Wavelengths; amplification; photodetector; quantumdot; solution; synthesis; upconversion

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APA (6^th Edition):

Lee, J. W. (2013). Solution Processed Infrared Photodetector Based on Quantum Dots with Photocurrent Amplification. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0046244

Chicago Manual of Style (16^th Edition):

Lee, Jae Woong. “Solution Processed Infrared Photodetector Based on Quantum Dots with Photocurrent Amplification.” 2013. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0046244.

MLA Handbook (7^th Edition):

Lee, Jae Woong. “Solution Processed Infrared Photodetector Based on Quantum Dots with Photocurrent Amplification.” 2013. Web. 17 Apr 2021.

Vancouver:

Lee JW. Solution Processed Infrared Photodetector Based on Quantum Dots with Photocurrent Amplification. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0046244.

Council of Science Editors:

Lee JW. Solution Processed Infrared Photodetector Based on Quantum Dots with Photocurrent Amplification. [Doctoral Dissertation]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0046244

University of Florida

15. Cao, Weiran. Optical Management in Nanostructured Optoelectronic Devices.

Degree: PhD, Materials Science and Engineering, 2013, University of Florida

URL: https://ufdc.ufl.edu/UFE0045253

Subjects/Keywords: Bending; Electric potential; Electrodes; Excitons; Luminance; Molecules; Power efficiency; Quantum efficiency; Reflectors; Transmittance; led; light-management; nanostructure; opv; semiconductors

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):

Cao, W. (2013). Optical Management in Nanostructured Optoelectronic Devices. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045253

Chicago Manual of Style (16^th Edition):

Cao, Weiran. “Optical Management in Nanostructured Optoelectronic Devices.” 2013. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0045253.

MLA Handbook (7^th Edition):

Cao, Weiran. “Optical Management in Nanostructured Optoelectronic Devices.” 2013. Web. 17 Apr 2021.

Vancouver:

Cao W. Optical Management in Nanostructured Optoelectronic Devices. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0045253.

Council of Science Editors:

Cao W. Optical Management in Nanostructured Optoelectronic Devices. [Doctoral Dissertation]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0045253

University of Florida

16. Fu, Xiangyu. Optical Study of Light Extraction in Corrugated Organic Light Emitting Diodes.

Degree: PhD, Materials Science and Engineering, 2017, University of Florida

URL: https://ufdc.ufl.edu/UFE0051757

Subjects/Keywords: corrugation; oled; photonic; spp; waveguide

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Fu, X. (2017). Optical Study of Light Extraction in Corrugated Organic Light Emitting Diodes. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0051757

Chicago Manual of Style (16^th Edition):

Fu, Xiangyu. “Optical Study of Light Extraction in Corrugated Organic Light Emitting Diodes.” 2017. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0051757.

MLA Handbook (7^th Edition):

Fu, Xiangyu. “Optical Study of Light Extraction in Corrugated Organic Light Emitting Diodes.” 2017. Web. 17 Apr 2021.

Vancouver:

Fu X. Optical Study of Light Extraction in Corrugated Organic Light Emitting Diodes. [Internet] [Doctoral dissertation]. University of Florida; 2017. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0051757.

Council of Science Editors:

Fu X. Optical Study of Light Extraction in Corrugated Organic Light Emitting Diodes. [Doctoral Dissertation]. University of Florida; 2017. Available from: https://ufdc.ufl.edu/UFE0051757

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