Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Transparent Conducting Oxide"”.
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Low temperature photoluminescence studies on sputter deposited cadmium sulphide/cadmium telluride heterojunctions and solar cells
… mW). The CdS/CdTe junctions were grown on transparent conducting oxide covered soda lime glass using rf-sputter deposition. It was found that the luminescence shifts from being dominated by sub-gap defect mediated emission at lower excitation powers to near band edge excitonic emission at …
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Optimization of the front end of CDTE solar cells
… of CdTe solar cells consists of two layers: a transparent conducting oxide (TCO) layer and a window layer. New wider band gap materials, ZnMgO are being used to replace CdS as the window layer for the purpose of removing blue loss. For ZnMgO, three important parameters, including the atomic Mg …
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Electrical Characterization of Ruthenium Dioxide Schottky Contacts on GaN
A film which is optically transparent and electrically conductive is difficult to come by but can be realized in ways such as doping an oxidized film or by oxidizing a metallic film resulting in what is known as a transparent conducting oxide (TCO). TCO's have many important uses in electronics, …
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Electrodeposited macroporous vanadium oxide Li-ion battery materials
… the electrodeposition of 3D macroporous vanadium oxide inverse opals and binary inverse opals on transparent conducting oxide substrates and stainless steel and thermally oxidized stainless-steel substrates. The electrodeposition follows a diffusion limited growth mode to form 3D porous …
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Anti-reflection zinc oxide nanocones for higher efficiency thin-film silicon solar cells
… the interface between the thin film cell's top Transparent Conducting Oxide (TCO) and the light absorbing silicon. In this work, we demonstrate the use of nanocone textured ZnO as the anti-reflection surface that mitigates this problem. The tapered structure of the nanocone forms a smooth …
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Properties of Amorphous Transparent Conducting and Semiconducting Oxides from First Principles
<p>"Amorphous transparent conducting and semiconducting oxides possess properties superior or comparable to their crystalline counterparts. The structure-property relationship in amorphous oxides is not nearly as well understood as in the case of the crystalline transparent conducting oxides. We …
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Spectroscopic Ellipsometry Studies of Thin Film a-Si:H Solar Cell Fabrication by Multichamber Deposition in the n-i-p Substrate Configuration
… by magnetron sputtering for the metal and transparent conducting oxide contacts and by plasma enhanced chemical vapor deposition (PECVD) for the semiconductor doped contacts and intrinsic absorber layers. The motivations are first to optimize the thin film Si:H solar cell in n-i-p substrate …
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Toward Improved Computational Tools for Electronic Transport Analysis and their use in the Development of Materials for Energy Applications
… the characterization of both n- and p-type semiconducting materials. Although previous methods have successfully characterized carrier transport in n-type materials which obey the spherical parabolic band approximation, these methods have failed for p-type materials for which band warping …
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GaInN/GaN Schottky Barrier Solar Cells
GaInN has the potential to revolutionize the solar cell industry, enabling higher efficiency solar cells with its wide bandgap range spanning the entire solar spectrum. However, material quality issues stemming from the large lattice mismatch between its binary endpoints and questionable range of …
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Characterization of Linear Electro-Optic Effect of Poled Organic Thin Films
… based on a multilayer structure containing a transparent conducting oxide (TCO) layer. The linear EO properties are often characterized using the Teng-Man reflection method. However, it has been reported that experimental error can result from ignoring multiple reflections and that an accurate …
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High Voltage Bias Testing And Degradation Analysis Of Photovoltaic Modules
… modules with earlier generation SnO2:F transparent conducting oxide (TCO) on the front glass installed on the FSEC High Voltage Test Bed were monitored since December 2001. The data was collected on a daily basis and analyzed. The leakage currents for some chosen time period were …
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Atomic layer deposition of metal oxides for photovoltaic applications
… the PCE of the device. To date, indium-tin oxide (ITO) is the commercial standard for use as the transparent conducting oxide (TCO) in perovskite solar cells. Although ITO has low sheet resistance values (8-100 Ω/□) the material is deposited using sputtering methods and undergoes high …
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Electrical characterisation of emerging photo anodes suited to water dissociation with an applied bias
… industry can be used to fabricate metal oxide semiconductors for use as photoanodes. Given that the protective oxide needs to be transparent to allow light to the photoactive material, two possible solutions are available. To have a thicker transparent conducting oxide, such as …
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Studies on monolithic tandem structure for low cost and high efficiency dye-sensitized solar cells
… their commercial use. Optical losses from the transparent conducting oxide (TCO) used in both the DSC and CIGS absorb a small amount of light that is required by the CIGS. These parasitic losses ultimately reduce the overall performance of the tandem device. The work presented in this thesis …
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Electro-Optic And Magneto-Dielectric Properties Of Multifunctional Nitride And Oxide Materials
… deals with multifunctional nitride and oxide compound semiconductors as well as multiferroic magnetic oxide systems by investigating structural, optical, electrical, magnetic, magnetodielectric and magnetoelectric properties.</p> <p>Thin films of InN nitride compound semiconductors and …