Design and analysis of low-reflection grating microstructures for a solar energy absorber

被引:23
作者
Hava, S [1 ]
Auslender, M [1 ]
机构
[1] Ben Gurion Univ Negev, Dept Elect & Comp Engn, IL-84105 Beer Sheva, Israel
关键词
silicon cells; solar energy absorption; diffraction gratings;
D O I
10.1016/S0927-0248(99)00107-5
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The problem of calculating the photo-induced current in an n(+)p junction solar cell with a microstructure grating on the top is formulated. For the case where useful absorption regions lie below the grating a closed solution of the problem is obtained, in which the carrier photo-generation rate is calculated using a full-vector electromagnetic simulation technique. Two structures: filled lamellae grating and overlayer, and filled V-groove grating and overlayer are considered, The first structure is optimized with respect to the integral photo-current and the second with respect to reflection loss. Both optimized structures are much less reflective and more efficient than an optimized flat-surface Si-SiO2 layer cell. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:143 / 151
页数:9
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