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Incident irradiation on solar modules experiences reflection at the outermost air-glass interface which reduces overall power conversion efficiency, especially when the sun is near the horizon in fixed-mount modules without active tracking. Here, we present a non-lithographic fabrication process for creating vertical and tilted nanostructures directly in the packaging glass of solar modules. We investigate...
A simple method is described to protect polycrystalline silicon (polysilicon) from electrochemical corrosion which often happens when the Micro-Electro-Mechanical systems (MEMS) device is released in HF-based solutions, especially when the device contains noble metal. We propose to employ a photoresist (PR) layer to cover the noble metal layer, which electrically contacts with the underlying polysilicon...
Wafer-scaled cost-effective technique for subwavelength structured (SWS) surface by means of anodic porous alumina masks directly formed on SiO2/Si substrates is demonstrated. Combined with ion beam etching and induced coupled plasma etching, SWS surface with a period of 100nm and a height of 200-300nm was achieved on 2 inch polished single crystalline Si wafer. A lower reflectivity below 6% was observed...
This research describes the truncated micro-pyramid reflective cavity for light emitting diodes (LEDs) packaging and increasing LEDs' heat dissipation. Research went through different microstructure profiles related to thermal effect in LEDs' packaging. Microstructures based on the silicon bulk micromachining provide unique truncated micro-pyramid reflective cavity geometry for LEDs assembly. Etching...
UV laser excited microphotoluminescence (PL) was used to evaluate the local strain for freestanding Si membranes (FSSMs), which can be applied to the fabrication of high performance radiofrequency (RF) power amplifier. The FSSMs were fabricated by the mesa etching of Si on insulator followed by etching of the buried oxide. Compressive strain in the membranes was induced by SiN deposition using low-pressure...
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