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 12 of 12 for “"light induced degradation"”.
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Light induced degradation in hydrogenated amorphous silicon (a-Si:H)
Light induced degradation in the microstructure and optical properties of a series of hydrogenated amorphous silicon (a-Si:H) layers, deposited by hot wire chemical vapour deposition system (HWCVD) on glass and silicon substrates at different temperatures ranging from 250Light induced degradation …
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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
… carrier injection, sometimes referred to as light induced degradation (LID). Light induced degradation in low-cost photovoltaic grade silicon is studied. Trap formation is shown to occur at temperatures above 200oC. Efficiency degradation reduced from 0.75% to 0.24% when the cell thickness …
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Fabrication and characterization of microcrystalline silicon solar cells
… low fill factors, low efficiencies, and severe light-induced degradation. On the other hand, solar cells with truly uc-Si:H i-layers show low open circuit voltages, high fill factors, high efficiencies, and excellent stability against light-induced degradation. It was shown by XRD experiments …
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Root cause defect identification in multicrystalline silicon for improved photovoltaic module reliability
… to other technologies. However, a new form of light-induced degradation was discovered when transitioning mc-Si to the latest high efficiency device architecture. Light- and elevated temperature-induced degradation (LeTID) causes performance to decrease by about 10% (relative) under …
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Compensation engineering for silicon solar cells
… properties of compensated silicon. We study the light-induced lifetime degradation in p-type and n-type Si with a wide range of dopant concentrations and compensation levels and show that the boron-oxygen defect is a grown-in complex involving substitutional boron and is rendered electrically …
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Compensation engineering for silicon solar cells
… properties of compensated silicon. We study the light-induced lifetime degradation in p-type and n-type Si with a wide range of dopant concentrations and compensation levels and show that the boron-oxygen defect is a grown-in complex involving substitutional boron and is rendered electrically …
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Quantum-confined Inorganic-organic Lead Halide Perovskite
… matrix. The GaN matrix prevents perovskite from light-induced degradation for five hours in the ambient atmosphere, and perovskite was stable after one-year storage in the ambient atmosphere. We found that our infiltration method can be generalised to related perovskite materials, offering a …
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Investigations into b-o defect formation-dissociation in cz-silicon and their effect on solar cell performance
… 200 C but recombination returns on exposure to light. Several mono-crystalline and multi-crystalline solar cells have been characterized by methods such as laser beam induced current (LBIC), Four-Probe electrical resistivity etc. to better understand the light induced degradation (LID) effect in …
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Plasma Enhanced Layer-by-layer Deposition and Nano-crystallization of Si:H films
… films needs to be well controlled to prevent light-induced degradation of the otherwise amorphous hydrogenated Si (a-Si:H). A layer-by-layer technique using two separate plasma sources for a-Si:H deposition and nano-crystallization was developed. A capacitively-coupled plasma (CCP) with …
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Emulsion templated assembly of composite particles
… an easily recoverable system for adsorption and light-induced degradation of synthetic dyes (e.g. Rhodamine B and Methylene blue) from water. Antibacterial magnetic particles (ZnO/CuO/Fe3O4/SiO2) were assembled and investigated for use as an inexpensive approach for disinfecting surfaces. The …
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Influence of bulk defects in p-type Czochralski silicon on reliability of high efficiency solar cells
… PV market, albeit high efficiency, suffers from light induced degradation (LID) and light and elevated temperature induced degradation (LeTID). Even though these degradation phenomena have been studied in depth, the atomic-level defect structure for both LID and LeTID remain elusive. …
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Laser Surface Texturing, Crystallization and Scribing of Thin Films in Solar Cell Applications
… from disadvantages of low efficiencies and light induced degradation. A one-step laser processing is investigated for introducing light-trapping structure and crystallization on a-Si:H thin films, which can potentially simultaneously alleviate the two weaknesses of a-Si:H. The nanoscale …