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 “"Anti-reflection Coating"”.
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Technological assessment of light-trapping technology for thin-film Si solar cell
… (DBR) with Diffraction Grating (DG) and Anti-Reflection Coating (ARC) for thin film Si solar cell was analyzed from the technology, market, and implementation perspectives. Two applications were investigated. For monocrystalline thin film Si solar cell, layer transfer technology is too …
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Salty development of an optical photoresist
… In order to measure contrast, we designed an anti-reflection coating stack to reduce reflections between the photomask and the photoresist. After development, we observe that for 400 nm exposures of photoresist PS4 that there is no significant change in contrast with salty development, …
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Atmospheric Pressure Chemical Vapor Deposition of Functional Oxide Materials for Crystalline Silicon Solar Cells
… increasing parasitic absorption within the anti-reflection coating(s); (2) to maximize internal back reflectance of rear passivated cells, thereby increasing optical absorption of weakly absorbed long wavelength photons (? > 900 nm); (3) to minimize recombination losses by providing …
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Superconducting nanowire single-photon detectors and sub-10-nm lithography
… and fabricated an integrated optical cavity and anti-reflection coating that enhanced the detection efficiency of SNSPDs by almost threefold to current record values of 57% at 1550 nm wavelength. We also improved our understanding of SNSPDs by modeling the electro-thermal response of the …
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Anti-reflection zinc oxide nanocones for higher efficiency thin-film silicon solar cells
… market. One source of inefficiency is the light reflection off 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 …
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Resolution limits and process latitude of comformable contact nano-lithography
… an optimized trilayer stack design of 225nm of anti-reflection-coating chemically separated from the resist by 70nm of evaporated silicon oxide. This design results in less than 1.5% back-reflection from the oxide into the resist for 10% film thickness variation. Finite-difference time-domain …
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Magnetic nanostructures patterned by block copolymer lithography
… polymeric templates fabricated out of BARL-i@ anti reflection coating guide the self-assembly of PFS domains with good LRO and very few defects over a large area. The ordered arrays were then transferred into silica and W, forming an ordered array of cp-packed W islands with period of 29 nm and …
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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
… for the formation of an effective porous silicon anti-reflection coating. This resulted in a porous silicon anti-reflection coated solar cell efficiency of 15.3% on a float zone Si sample with an excellent fill factor (78.7%). The typical process used in the literature involves porous silicon …
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Fabrication and Optimization of Single-Junction GaAs Thin Film Solar Cells on Epi-ready Flexible Metal Tapes for Low-cost Photovoltaics
… a process of cap layer removal (passivation) and anti-reflection coating. Efficiency greater than 6% with open circuit voltage (VOC) of 566mV, fill factor (FF) of 68%, short circuit current density (JSC) of 17.4mA/cm2 was obtained. Steps were taken to improve the quality of p-n junction by …
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High quality optical and optoelectronic materials for efficient light management and solar spectrum control and conversion
… within the solar microcell and allows for an anti-reflection coating on the front surface to drastically improve the absorption of incident irradiation. Strategies for an improved concentration design are then explored that implement traditional lenses for concentration of direct light at high …
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Solution-Processed Thin Film Deposition and Characterization of Multinary Chalcogenides: Towards Highly Efficient Cu2BaSn(S,Se)4 Solar Devices
… for Ba relative to Cu/Sn inhibits III and III antisite disordering and related band tailing. However, while the CBTSSe system seems to meet the expectation of antisite defect resistance, the broader implications of atomic size/coordination discrimination as a defect control mechanism and the …
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Engineering the surfaces of group IV materials for energy applications
… has the added advantage of acting as an anti-reflection coating in addition to the surface passivation. Atomic layer deposition (ALD) technique is often used to deposit these TiO2 thin films. However, the low growth per cycle observed for typical ALD processes makes it unfeasible to be …
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Reststrahlen band optics for the advancement of far-infrared optical architecture
… spectrometer. Techniques for measuring infrared reflection and thermal emission at fixed and variable angles are described. Finally, the two computational methods most commonly employed in this dissertation are outlined; namely, the transfer matrix method (TMM) and rigourous coupled wave analysis …
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Micro-photovoltaic materials and systems for solar energy harvesting and light management
… conditions are achieved via the addition of an anti-reflection coating along the microcell edges and improvements in sidewall passivation quality (via decreasing ERV). We simulate the LSC system performance using near-infrared emitting quantum dots as the luminophore, varying photoluminescence …
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Innovations in Transition-Edge Sensors as superconductive single-particle detectors
L'abstract è presente nell'allegato / the abstract is in the attachment