Effect of Side Chain of Oligothiophene Derivatives on Bulk Heterojunction Structure in Organic Photovoltaic Devices

Kenichi Sasaki; Yosei Shibata; Ming Lu; Yuji Yoshida; Reiko Azumi; Yasukiyo Ueda

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Effect of Side Chain of Oligothiophene Derivatives on Bulk Heterojunction Structure in Organic Photovoltaic Devices

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The effect of the molecular structure on photovoltaic performance was investigated by comparing two types of active layers. One is an active layer formed by sexithiophene (6T) and C60 molecules which don’t have side chains. Another one is an active layer formed by a,ω-bis(2-hexyldecyl)sexithiophene (BHD6T) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) molecules which have side chains. The 6T:C60 active layer exhibited an excessive crystallization of 6T, which led to the low photovoltaic performance. In the BHD6T:PCBM active layer, the crystallization of BHD6T was suppressed. The crystallization of BHD6T was also easily controlled by thermal annealing, which led to improved photovoltaic performance.

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《材料物理与化学进展（英文）》 |2013年第2期|185-190|共6页
作者
Kenichi Sasaki; Yosei Shibata; Ming Lu; Yuji Yoshida; Reiko Azumi; Yasukiyo Ueda;
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作者单位

Graduate School of Engineering;

Kobe University;

Hyogo;

Japan;

Interdisciplinary Graduate School of Science and Engineering;

Tokyo Institute of Technology;

Kanagawa;

Japan;

National Institute of Advanced Industrial Science and Technology (AIST);

Ibaraki;

Japan;

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原文格式 PDF
正文语种 chi
中图分类化学;
关键词
Organic; Photovoltaic; Cells; Sexthiophene; Bulk; Heterojunction; Morphology;

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Effect of Side Chain of Oligothiophene Derivatives on Bulk Heterojunction Structure in Organic Photovoltaic Devices

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