标题：Analysis of Antireflection Performance of V-Ring Groove Structures for Photovoltaic Crystal Silicon Solar Cells
作者：Yao L.; Zhang L.; Ge P.; Gao Y.; Wang H.
作者机构：[Yao, L] Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, National Demonstration Center for Experimental M 更多
通讯作者地址：[Zhang, L] Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, National Demonstration Center for Experimental 更多
来源：Physica Status Solidi (A) Applications and Materials Science
关键词：3D ray tracing; light trapping structures; silicon solar cells; weighted reflectance
摘要：Herein, the purpose is to study the antireflection performance of the silicon surface with a V-ring groove texture. Based on the principle of geometrical optics, a numerical model of 3D ray tracing is established to calculate the weighted reflectance of the textured silicon surface with V-ring groove structures, and the calculated results are in good agreement with the measured reflectance results by a mechanical processing experiment. Then, the reflectance of the V-ring groove textured silicon surface with different parameters is simulated and analyzed through the established model, and better parameters of the V-ring groove structure for antireflection are determined by considering actual processing conditions. Finally, the weighted reflectance and reflectance spectra of the V-ring groove textured silicon surface with better parameters are calculated. It is found that the lowest weighted reflectance of the silicon surface with improved V-ring groove texture is 5.53%, and the lowest weighted reflectance is reduced by about 5%, compared with the chemically etched pyramid texture of which the weighted reflectance is 10.54%. In addition, when the incident angle is less than 50°, the weighted reflectance of the silicon surface with an improved V-ring groove texture remains less than 10%. © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim