Exploiting optical anisotropy to increase the external quantum efficiency of flexible P3HT:PCBM blend solar cells at large incident angles

被引：13

作者：

Chuang, Shang-Yu ^{[1
]}

Yu, Chen-Chieh ^{[1
]}

Chen, Hsuen-Li ^{[1
]}

Su, Wei-Fang ^{[1
]}

Chen, Chun-Wei ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 10617, Taiwan

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2011年 / 95卷 / 08期

关键词：

P3HT/PCBM blend; Optical anisotropy; Various incident angle operation; Flexible solar cells; Moth-eye structures; External quantum efficiency; POLYMER PHOTOVOLTAIC CELLS; SELF-ORGANIZATION; POLY(3-HEXYLTHIOPHENE); MORPHOLOGY; POLYTHIOPHENE; TRANSPORT; MOBILITY; NETWORK; FILMS;

D O I：

10.1016/j.solmat.2011.03.015

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 external quantum efficiencies of P3HT:PCBM blend solar cells decrease significantly when they are bent or illuminated at large incident angles because of (i) optical anisotropy of the P3HT:PCBM films-primarily because a mismatch between the direction of the electric field of the incoming light and the orientation of the P3HT:PCBM blend nanocrystallites results in a significant reduction in the amount of TM-polarized light absorbed and (ii) interfacial reflection of multilayer structures - primarily because the outermost air-flexible substrate interface exhibits a distinct refractive index difference - at large incident angles. Textured moth-eye structures fabricated by nanoimprint lithography on the flexible substrates of organic solar cells reduce the degree of interfacial reflection at high incident angles: they should allow more TE-polarized light to absorb in the P3HT:PCBM films (active layers) of the organic solar cells. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2141 / 2150

页数：10

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