非周期性对用于光伏的硅纳米棒结构宽带反射的影响。
Effect of aperiodicity on the broadband reflection of silicon nanorod structures for photovoltaics.
作者信息
Lin Chenxi, Huang Ningfeng, Povinelli Michelle L
机构信息
Ming Hsieh Department of Electrical Engineering and Center for Energy Nanoscience, University of Southern California, Los Angeles, CA, USA.
出版信息
Opt Express. 2012 Jan 2;20(1):A125-32. doi: 10.1364/oe.20.00a125.
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.
我们对非周期性对硅纳米棒抗反射结构的影响进行了系统的数值研究。我们使用散射矩阵方法来计算纳米棒周期性和非周期性排列在太阳光谱上的平均反射损耗。我们发现，根据纳米棒的直径，非周期性既可以提高也可以降低抗反射性能。我们使用引导随机游走算法来设计最佳的非周期性结构，这些结构的反射损耗低于最佳周期性结构和随机非周期性结构。
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