Impedance spectroscopy on organic bulk-heterojunction solar cells

被引：51
|
作者：
Glatthaar, M
Mingirulli, N
Zimmermann, B
Ziegler, T
Kern, R
Niggemann, M
Hinsch, A
Gombert, A
机构：
[1] FMF, D-79104 Freiburg, Germany
[2] Fraunhofer ISE, D-79110 Freiburg, Germany
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2005年 / 202卷 / 11期
关键词：
D O I：
10.1002/pssa.200521149
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We measured the electrical impedance spectra of organic bulk-heterojunction solar cells based on an absorber blend of poly(3-hexylthiophene) and [6,6]-phenyl C-61-butyric acid methyl ester. Comparing the spectra of the non-treated device and after two consecutive treatments with applied forward bias voltage at 110 degrees C, we observed a region in the semiconductor with a low conductivity, which was expanding after the treatments. We concluded that this region is a depletion region at the aluminium contact. This was confirmed by the bias dependence of the impedance spectra.
引用
收藏
页码：R125 / R127
页数：3
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