Effect of aperiodicity on the broadband reflection of silicon nanorod structures for photovoltaics

被引：29
|
作者：
Lin, Chenxi [1 ]
Huang, Ningfeng
Povinelli, Michelle L.
机构：
[1] Univ So Calif, Ming Hsieh Dept Elect Engn, Los Angeles, CA USA
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 01期
关键词：
SOLAR-CELLS; SUBWAVELENGTH STRUCTURES; NANOWIRE ARRAYS; LIGHT; OPTIMIZATION; ABSORPTION; SURFACES; DESIGN;
D O I：
10.1364/OE.20.00A125
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We carry out a systematic numerical study of the effects of aperiodicity on silicon nanorod anti-reflection structures. We use the scattering matrix method to calculate the average reflection loss over the solar spectrum for periodic and aperiodic arrangements of nanorods. We find that aperiodicity can either improve or deteriorate the anti-reflection performance, depending on the nanorod diameter. We use a guided random-walk algorithm to design optimal aperiodic structures that exhibit lower reflection loss than both optimal periodic and random aperiodic structures. (C)2011 Optical Society of America
引用
收藏
页码：A125 / A132
页数：8
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