Tuning acceptor energy level for efficient charge collection in copper-phthalocyanine-based organic solar cells

被引：107

作者：

Chu, CW ^{[1
]}

Shrotriya, V ^{[1
]}

Li, G ^{[1
]}

Yang, Y ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 15期

关键词：

D O I：

10.1063/1.2194207

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We compare organic donor/acceptor heterojunction photovoltaic devices based on copper phthalocyanine (CuPc) as the donor and [6,6]-phenyl C-60 butyric acid methyl ester (PCBM) or buckminsterfullerene (C-60) as the acceptor. The effect of the two acceptors on open-circuit voltage and short-circuit current density is studied. Improved interface properties, optimal energy level matching, and more balanced charge transport are believed to be the reasons for better performance of CuPc/PCBM heterojunction device, in terms of photocurrent and fill factor. The energy conversion efficiency of the devices under AM1.5G solar illumination at 130 mW/cm(2) is improved to 1.18%, up from 0.74%.

引用

页数：3

共 20 条

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