用于提高非晶硅薄膜太阳能电池效率的等离子体背结构设计。

Design of plasmonic back structures for efficiency enhancement of thin-film amorphous Si solar cells.

机构信息

Nano-optoelectronics Laboratory, Institute of Semiconductors, Chinese Academy of Sciences,P.O. Box 912 Beijing 100083, China.

出版信息

Opt Lett. 2009 Dec 1;34(23):3725-7. doi: 10.1364/OL.34.003725.

DOI:10.1364/OL.34.003725

PMID:19953175

Abstract

Metallic back structures with one-dimensional periodic nanoridges attached to a thin-film amorphous Si (a-Si) solar cell are numerically studied. At the interfaces between a-Si and metal materials, the excitation of surface-plasmon polaritons leads to obvious absorption enhancements in a wide near-IR range for different ridge shapes and periods. The highest enhancement factor of the cell external quantum efficiency is estimated to be 3.32. The optimized structure can achieve an increase of 17.12% in the cell efficiency.

摘要

具有附着在薄膜非晶硅(a-Si)太阳能电池上的一维周期性纳米脊的金属背结构进行了数值研究。在 a-Si 和金属材料之间的界面处，表面等离子体激元的激发导致不同脊形状和周期的宽近红外范围内的明显吸收增强。电池外量子效率的最高增强因子估计为 3.32。优化后的结构可以使电池效率提高 17.12%。