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 11 of 11 for “"Multi-crystalline"”.
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Low cost manufacturing of light trapping features on multi-crystalline silicon solar cells : jet etching method and cost analysis
… methods to improve the light trapping ability of multi-crystalline solar cells. We focused our work on improving current wet etching methods to achieve the desired light trapping features which consists in micro-scale trenches with parabolic cross-sectional profiles with a target aspect ratio of …
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Investigation of Light Induced Degradation in Promising Photovoltaic Grade Si and Development of Porous Silicon Anti-Reflection Coatings for Silicon Solar Cells
Cast multi-crystalline silicon substrates are used in more than 50% of the photovoltaic modules produced today. The random grain orientations of multi-crystalline silicon wafers inhibit the formation of an effective surface texturing using conventional techniques. The other main substrate used is …
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GaInN/GaN Schottky Barrier Solar Cells
… solar cells. Nonetheless, amorphous and multi-crystalline forms of GaInN have been theorized to exhibit a defect-free bandgap, enabling GaInN alloys at any indium composition to be realized. But the range of possible p-type doping has not yet been determined and no device quality material …
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Investigations into b-o defect formation-dissociation in cz-silicon and their effect on solar cell performance
… of silicon solar cells is taken by single crystalline Czochralski (CZ) grown wafers. The efficiency of solar cells fabricated on boron-doped Czochralski silicon degrades due to the formation of metastable defects when excess electrons are created by illumination or minority carrier …
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Modeling life cycle greenhouse gas emissions from photovoltaic and wind power generation, with and without energy storage
… 35 to 43 gc/kWh). (3) Chinese manufacturing of multi-crystalline silicon (mc-Si) modules emits ~25% more GHGs than European manufacturing, due not only to higher carbon intensity of upstream electricity, as previously reported, but also to more energy input per module produced. (4) Relative to …
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Application of scanning micro-tip and UHV Kelvin probes in surface and material characterisation.
… The upsilon-SKP has been applied in ambient to multi-crystalline Si; we show variations in work function between different poly-types, surface charging effects and series resistance (shunts). For comparison single-crystalline germanium and gallium arsenide is investigated by means of surface …
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Potencialo poveikio vandeninio tirpalo sluoksnio prie polimerinio paviršiaus savybėms tyrimas kvarco rezonatoriaus admitanso metodu /
… obtained for quartz sensor covered with PVB and multi-crystalline wax Cosmoloid H80 shows that the nature of the coating does not considerably affect the dependence of ρη on the potential. Dependence of the product of density and viscosity on the potential in 0,1M NaF solution at PVB-coated Au …
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Synthesis, characterization and high pressure propene oligomerization over heteropoly acids, SAPO-11 molecular sieves and MeAPSO-11 molecular sieves
… area salts, typically less than 15m²/g, with multiple endothermic mass losses (e.g. AI, Fe, Ce, Ni, Co, Cu) and; Type 8:- high surface area salts, typically 35-150 m²/g, with a single endothermic mass loss (e.g. K and NH₄). The Type A salts were multi-crystalline, consisting of more than one …
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Fabricación de células solares sobre silicio multicristalino y silicio purificado por la vía metalúrgica
… caso, los substratos utilizados serán de silicio multicristalino caracterizados por poseer un menor tiempo de vida y por ser más sensibles a los pasos de horno. Por este motivo el proceso estándar de P/Al, debido a la alta carga térmica asociada al mismo, no resultó eficiente con muestras de bajo …
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Defect engineering strategies for solar grade silicon and their optimization by predictive simulation
… production chain: in the final device, in the multi-crystalline (mc) Si wafer, and in the Si feedstock material. Along the production chain, impurity concentrations are assumed to be altered by a standard industrial P diffusion gettering (PDG) during solar cell processing and by solid-liquid …