光学
单晶硅
堆栈(抽象数据类型)
薄脆饼
材料科学
光伏系统
散射
反射器(摄影)
硅
光电子学
棱锥(几何)
反射(计算机编程)
吸收(声学)
晶体硅
太阳能电池
物理
光源
计算机科学
电气工程
工程类
程序设计语言
作者
Oliver Höhn,Nico Tucher,Bénédikt Bläsi
出处
期刊:Optics Express
[The Optical Society]
日期:2018-03-09
卷期号:26 (6): A320-A320
被引量:25
摘要
Front side pyramids are the industrial standard for wafer based monocrystalline silicon solar cells. These pyramids fulfill two tasks: They act as anti-reflective structure on the one hand and as a light-trapping structure on the other hand. In recent development smaller pyramids with sizes below 1 µm attract more and more interest. In this paper an optical analysis of periodically arranged front side pyramids is performed. The impact on the reflectance as well as on the useful absorption within the solar cell is investigated depending on the pyramids size, the amount of additional scattering in the system and the quality of the rear side reflector. In contrast to other investigations not only the solar cell, but the full photovoltaic (PV) module stack is considered. This can strongly influence results, as we show in this paper. The results indicate that in a PV module stack with realistic assumptions for the amount of scattering as well as for the rear side reflectance only small differences for pyramids with sizes above 600 nm occur. Preliminary conclusions for random pyramids deduced from these results for periodically arranged pyramids indicate that these differences could become even smaller.
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