Enhancing light harvesting in organic solar cells with pyramidal rear reflectors

被引：32

作者：

Cao, Weiran ^{[1
]}

Myers, Jason D. ^{[1
]}

Zheng, Ying ^{[1
]}

Hammond, William T. ^{[1
]}

Wrzesniewski, Edward ^{[1
]}

Xue, Jiangeng ^{[1
]}

机构：

[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 02期

基金：

美国国家科学基金会;

关键词：

PHOTOVOLTAIC CELLS; EFFICIENCY ENHANCEMENT; POLYMERS;

D O I：

10.1063/1.3609870

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report enhanced light absorption in semi-transparent organic solar cells by using pyramidal rear reflectors to induce light trapping in the photoactive layer. Pyramidal rear reflectors with a base angle of 30 degrees were molded from a transparent polymer on planar substrates. Compared with a planar rear reflector, the pyramidal structure leads to a more than 2.5 times longer path length in the active layer for the incident light. Experimental demonstration showed an 11%-75% enhancement in the photocurrent and overall efficiency of the solar cells, depending on the device size and active layer thickness. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3609870]

引用

页数：3

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