期刊
APPLIED PHYSICS LETTERS
卷 100, 期 19, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4711849
关键词
-
资金
- Bundesministerium fur Bildung und Forschung [03SF0356B]
- Bavarian Academy of Sciences and Humanities
- Bavarian Ministry of Economic Affairs, Infrastructure, Transport, and Technology
We investigated photogeneration yield and recombination dynamics in blends of poly(3-hexyl thiophene) (P3HT) and poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) with [6,6]-phenyl-C(61)butyric acid methyl ester (PC61BM) by means of temperature dependent time delayed collection field measurements. In MDMO-PPV: PC61BM, we find a strongly field dependent polaron pair dissociation which can be attributed to geminate recombination in the device. Our findings are in good agreement with field dependent photoluminescence measurements published before, supporting a scenario of polaron pair dissociation via an intermediate charge transfer state. In contrast, polaron pair dissociation in P3HT:PC61BM shows only a very weak field dependence, indicating an almost field independent polaron pair dissociation or a direct photogeneration. Furthermore, we found Langevin recombination for MDMO-PPV: PC61BM and strongly reduced Langevin recombination for P3HT:PC61BM. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4711849]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据