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 20 of 74 for “"photovoltaic applications"”.
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Silicon cast wafer recrystallization for photovoltaic applications
… methods of manufacturing silicon wafers for photovoltaic (PV) cells define the electrical properties of the wafer in a first step, and then the geometry of the wafer in a subsequent step. The geometry is typically defined by a combination of grinding and abrasive wire sawing. While mature, …
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Chalcogenide glasses for advanced photonic and photovoltaic applications
… polymer substrates for advanced photonic and photovoltaic applications. In this work we developed a low-cost method to deposit glassy films while retaining glass stoichiometry and high optical quality for photonic and photovoltaic applications. As2Se3 amorphous thin films were prepared by …
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Sub-module differential power processing for photovoltaic applications
Photovoltaic energy offers great benefits over conventional energy resources, but its large scale deployment has long been hindered by the prohibitive cost and low energy output. Advanced power electronics design plays a critical role in reducing the cost of PV energy systems and improving the …
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A Novel DC-DC Converter for Photovoltaic Applications
… distributed forms of generation, like solar photovoltaics, will play a large role in our transition to a clean energy future. In this thesis, a novel DC-DC converter known as the Coupled Inductors Combined Cuk-SEPIC' (CI-CCS) converter is explored, which is particularly attractive for these …
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Fabricating and Tailoring Halide Perovskites for Photovoltaic Applications
Green energy is a contemporary global concern, and research of materials for solar energy harvesting is the heart of potential solutions for the energy crisis. Halide perovskites are leading candidates to replace silicon in next generation solar cells. This thesis focuses on halide perovskite …
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Synthesis and characterization of nanostructured catalysts for photovoltaic applications
The objective of this project was to investigate the effect of the morphology of titanium dioxide (TiO2) nanoparticles on the electron transport properties and light harvesting potential in a dye sensitized solar cell (DSSC). Particular attention was given to develop synthetic methods to produce …
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Synthesis and characterization of electronic materials for photovoltaic applications
… materials are of great interest for use in photovoltaics, sensors, light-emitting diodes, and molecular electronics. Hybrid Inorganic/Organic materials have been studied for device application due to their unique electronic properties. These properties result from the formation of bulk …
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Atomic layer deposition of metal oxides for photovoltaic applications
Organic-inorganic halide perovskite solar cells have gained a lot of traction in recent years due to their high power conversion efficiencies (PCE), >20%, tunable band gap and low fabrication costs. However, as the maximum theoretical efficiency outlined by the Shockley-Quiesser model for a …
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Holographic Spectrum-Splitting Design for Micro-Concentrating Photovoltaic Applications
… conversion efficiency and energy yield of solar photovoltaic systems. It can reach high efficiency by spatially assigning photons to PV cells with different bandgaps using optical filtering methods. This dissertation begins with a review of the background of holographic spectrum-splitting PV …
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High efficiency DC/AC power converter for photovoltaic applications
… development of a microinverter for single-phase photovoltaic applications that is suitable for conversion from low-voltage (25-40V) DC to high voltage AC (e.g. 240VAC,RMS). The circuit topology is based on a full-bridge series resonant inverter, a high-frequency transformer, and a novel half-wave …
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A stacked full-bridge microinverter topology for photovoltaic applications
… been done to develop a microinverter for solar photovoltaic applications consisting of a high-frequency series resonant inverter and transformer section connected to a a cycloconverter that modulates the resonant current into a single-phase 240 VRMS utility line. This thesis presents a new …
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II-VI Core-Shell Nanowires: Synthesis, Characterizations and Photovoltaic Applications
… nanowires as the new building blocks for photovoltaic (PV) devices has drawn considerable attention because of the great potential of achieving high efficiency and low cost. In special, nanowires with a coaxial structure, namely, core-shell structures have demonstrated significant …
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Efficient and Reliable Power Conversion Techniques for Distributed Photovoltaic Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
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Biologically-templated metal oxide and metal nanostructures for photovoltaic applications
… that can enhance the performance of photovoltaic devices. First, we used M13 bacteriophages for their high aspect ratio and ability to bind noble metal nanoparticles, to create plasmonic nanowire arrays. We developed a novel process to assemble bacteriophages into nanoporous thin …
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Hydrothermal synthesis of zinc oxide nanowire arrays for photovoltaic applications
… which is important for optoelectronic device applications, has proven elusive due to lack of understanding regarding fundamental aqueous growth mechanisms at the nanoscale. Here, we utilize electron-beam lithography to template ZnO seed layers, demonstrating that seed layer engineering via …
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Defect engineering of cuprous oxide thin-films for photovoltaic applications
… solar cells are promising for renewable-energy applications due to their low material usage and inexpensive manufacturing potential, making them compatible with terawatts-level deployment. Cuprous oxide (Cu₂O) is an earthabundant semiconductor with desirable properties for light-absorbing …
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Comparison and Design of High Efficiency Microinverters for Photovoltaic Applications
… energy sources. Renewal energy sources such as photovoltaic (PV) panels have become more popular due to recent developments in PV panel manufacturing that decreases material costs and improves energy harvesting efficiency. Since PV sources are DC sources power conversion stages have to be used …
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Tailoring functional Π-conjugated polymers and molecules for organic photovoltaic applications
The field of organic photovoltaics (OPVs) has developed into an active research topic in applied polymer, materials, and chemical sciences over the past decade due to the continuous improvement in device performance. The solution-processability of the organic active layer materials allows for the …
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FUNCTIONAL THIN FILMS BY SPATIAL ATOMIC LAYER DEPOSITION FOR PHOTOVOLTAIC APPLICATIONS
… atomic layer deposition for application in the photovoltaic industry. The atomic layer deposition technique offers good uniformity, conformality and precise film thickness control. The spatial atomic layer deposition technique combines a high throughput with the advantages of conventional atomic …
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Heteroepitaxial Germanium-on-Silicon Thin-Films for Electronic and Photovoltaic Applications
… manufacturing costs has been a key objective for photovoltaic researchers to drive down the levelized cost of energy for solar power. In this pursuit, III-V compound semiconductor based solar cells have steadily shown performance improvement at approximately 1% (absolute) increase per year, with a …
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