Stoichiometry, mobility, and performance in bulk heterojunction solar cells

被引：49

作者：

Andersson, L. Mattias ^{[1
]}

Zhang, Fengling ^{[1
]}

Inganaes, Olle ^{[1
]}

机构：

[1] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 07期

关键词：

D O I：

10.1063/1.2771524

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bipolar transport in blends of a copolymer of fluorene, thiophene and electron accepting groups, and the substituted fullerene [6,6]-phenyl-C61-butyric acid methylester have been studied through charge extraction by linearly increasing voltage on solar cells and with field effect transistors. Between 10% and 90% polymer has been used and the results show a clear correlation to solar cell performance. Optimal solar cells comprise 20% polymer and have a power conversion efficiency of 3.5%. The electron mobility is increasing strongly with fullerene content, but is always lower than the hole mobility, thus explaining the low amount of polymer in optimized devices. (c) 2007 American Institute of Physics.

引用

页数：3

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