4/27/2023 0 Comments Crystalline si solarcellOptical light management by self-arrangement of inverted tetragonal pyramids on the silicon surface through copper-assisted etching technique in a single stepĭonercark, Ergi Çolakoğlu, Tahir Terlemezoğlu, Makbule Abak, Musa Kurtulus Çiftpınar, Emine Hande Bek, Alpan Turan, Razit ()ĭeveloping efficient light trapping techniques plays a crucial role in improving silicon (Si) solar cell parameters by decreasing optical losses. However, due to scarcity of indium and its increasing prices worldwide, coupled with the inflexibility of ITO, alternative materials are being investigated. Indium tin oxide (ITO) is the conventional transparent conducting material used in transparent thin film heaters. Transparent thin film heaters are used in various de-fogging and de-icing applications because of their ability to convert electrical energy to thermal energy while allowing to transmit solar light through a surface. Transparent thin film heaters based on silver nanowire networksĮrgün, Orçun Ünalan, Hüsnü Emrah Department of Metallurgical and Materials Engineering (2015) In this study, photolithography and metal-assisted etch. Besides, reduced reflection from surface and increased light trapping in nano/micropillars enhance solar cell efficiency. In this geometry, densely packed nano/micropillars allow minority carrier collection in the radial direction and shorten carrier diffusion length to p-n junction. Radial junction solar cells have been proposed as an alternative device geometry to conventional planar solar cells with its remarkable electrical and optical performance. Radial junction solar cells prepared on single crystalline silicon wafers by metal-assisted etchingīAYTEMİR, Gulsen ES, FIRAT ALAGOZ, Arif Sinan Turan, Raşit () It significantly increases the light absorption of silicon by controlling the incoming light through multiple interactions which is called light trapping. One of the most efficient and long-lasting methods used for performance enhancement for graphene/silicon Schottky solar cells is silicon surface texturing. Graphene/silicon Schottky solar cells are one of the extensively studied topics during the last decade due to the high conductivity, high transparency, and mechanical flexibility properties of graphene. As a final step, the optimized texturing process was applied to multi-crystalline solar cell devices and showed promising results regarding cell performance parameters.ĭEVELOPMENT AND EVALUATION OF LASER PROCESSED LIGHT MANAGEMENT INTERFACES FOR GRAPHENE/SILICON SCHOTTKY SOLAR CELLSĪvishan, Nardin Bek, Alpan Ünalan, Hüsnü Emrah Department of Micro and Nanotechnology () The structural and optical properties of the surface were identified through reflection measurements and scanning electron microscopy imaging. We observed lower reflection results in comparison with standard isotropic texturing using a standard acid solution. This paper reports, for the first time, a new single-step Ni-assisted etching technique to obtain nano-scale porous structures, that is, black silicon on multi-crystalline wafers. Metal-Assisted Etching (MAE) has been shown to be a promising and low-cost alternative to the traditional acid-based isotropic texturing. With the utilization of diamond wires in recent advances in wafer slicing technology, surface texturing for the multi-crystalline Si wafers by the traditional acid-based texturing technique has become difficult. The texturing of silicon surfaces is a well-known method of reducing the reflection from the surface of crystalline Si solar cell devices.
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