Global ETD Search

1	A study of the suitability of amorphous, hydrogenated carbon (a-C:H) for photovoltaic devices Maldei, Michael January 1997 (has links) No description available. Engineering, Chemical amorphous hydrogenated carbon (a-C:H) photovoltaic devices elastic recoil spectroscopy optical bandgap energy
2	Synthesis and Luminescence of Zinc Oxide Nanorods-Blended Thiopheno-Organosilicon Polymers Tyombo, Nolukholo January 2017 (has links) Magister Scientiae - MSc (Chemistry) / The increasing cost of fossil fuel energy production and its implication in environmental pollution and climate change created high demand for alternative and renewable sources of energy. This has led to great interest in research in the field of photovoltaic or solar cells Due to the abundance of sunlight, the technology is sustainable, non-polluting and can be implemented at places where power demand is needed, for example in rural areas. Solar cell devices that have been commercialized are currently based on silicon technology, involving the use of monocrystalline, polycrystalline and amorphous silicon. Although they produce highly efficient solar cells, the cost of Si solar cells is too high. Second generation solar cell materials such as cadmium telluride and third generation materials such as perovskites and organic polymers have been receiving much attention recently. However, they lack the efficiency of Si solar cells. This research proposes the development of high energy conservation photovoltaic cells from novel low-cost organosilicon polymers. The aim was to develop novel highly branched organosilane polymers such as poly(3-hexythiophene), polydi(thien-2-yl)dimethylsilane, poly(3-hexyl- [2,2'] bithiophenyl-5-yl)-dimethyl-thiophen-2yl-silane) as electron donors along with zinc oxide nanorod as the electron acceptor which were able to bring the efficiency of the resultant photovoltaic cell close to that of current Si solar cell. / 2021-08-31
3	Engineering of the Optical, Structural, Electrical, and Magnetic Properties of Oxides and Nitrides of In-Ga-Zn Thin Films Using Nanotechnology Ebdah, Mohammad A. 25 July 2011 (has links) No description available. Engineering Nanotechnology Physics Spectroscopic Ellipsometry Amorphous Sputtering Thin Films Optical bandgap Optical Functions Carrier Concentration Electrical Mobility Hall effect Bandgap Engineering Oxides Nitrides Ferromagnet Oxidation State
4	Optical active thin films on cover glass increasing the efficiency of photovoltaic modules. Johansson, Wilhelm January 2018 (has links) Thin film coatings of ZnO, TiO2, CeOX and BiOX have been deposited on soda lime silica glass through spray pyrolysis. The effects on the optical properties of the coated glass, as well as the possible impacts on the life expectancy and energy efficiency of PV-modules have been studied. ZnO and TiO2 coatings both reduced the transmission of UV radiation of wavelengths destructive to PV-modules. Therefore, both have the potential to increase the life expectancy of PV-modules if used on cover glass. The ZnO thin film also showed an increase in photoluminescence at 377 nm when radiated with UV radiation of 325 nm while TiO2 reduced the photoluminescence. ZnO coatings on the cover glass have the potential to increase the efficiency of PV-modules in addition to UV protection. No CeOX or BiOX films were found to be deposited with the method used. The ZnO and TiO2 coated samples showed a decrease in transmission of light, due to increased reflection and possibly scattering. This needs to be addressed if these kinds of coatings are going to be beneficial for Si PV-modules. Thin films Coatings Metal oxides UV-protection UV-cutoff Optical bandgap Renewable Energy Photoluminescence PV-modules Energy Efficiency Life expectancy Tunnfilm metalloxider UV-skydd UV-kant Optiskt bandgap Förnyelsebar Energi Fotoluminiscens Solcellsmoduler Solceller Verkningsgrad Teknisk Livslängd Energy Engineering Energiteknik

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