Direct arylation polycondensation: A promising method for the synthesis of highly pure, high-molecular-weight conjugated polymers needed for improving the performance of organic photovoltaics

被引：126

作者：

Kuwabara, Junpei ^{[1
]}

Yasuda, Takeshi ^{[2
]}

Choi, Seong Jib ^{[1
]}

Lu, Wei ^{[1
]}

Yamazaki, Koutarou ^{[1
]}

Kagaya, Shigehiro ^{[3
]}

Han, Liyuan ^{[2
]}

Kanbara, Takaki ^{[1
]}

机构：

[1] Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), Graduate School of Pure and Applied Sciences, University of Tsukuba

[2] Organic Thin-Film Solar Cells Group, Photovoltaic Materials Unit, National Institute for Materials Science (NIMS), Tsukuba

[3] Graduate School of Science and Engineering for Research, University of Toyama, Toyama 930-8555

来源：

Advanced Functional Materials | 2014年 / 24卷 / 21期

基金：

日本学术振兴会;

关键词：

direct arylation polycondensation; organic field-effect transistors; organic photovoltaics; polymeric materials; purity of materials;

D O I：

10.1002/adfm.201302851

中图分类号：

学科分类号：

摘要：

Alternating conjugated polymers of ethylenedioxythiophene and fluorene are prepared using three different synthetic methods to investigate the effects of these synthetic methods on the purity, field-effect transistor (FET) performance, and organic photovoltaic (OPV) performance of the polymer. In this study, microwave-assisted direct arylation polycondensation is used to obtain a high-purity, high-molecular-weight (147 kDa) polymer. This pure polymer exhibits a high FET hole mobility of 1.2 × 10-3 cm2 V -1 s-1 and high OPV performance with a power conversion efficiency of 4%, even though the polymer forms an amorphous film, which absorbs in a limited region of the spectrum. Field-effect transistor and organic photovoltaic performances strongly depend on the synthetic methods of a polymer owing to different purity and molecular weight. A high-purity, high-molecular-weight polymer exhibits a high FET hole mobility of 1.2 × 10-3 cm2 V-1 s-1 and high OPV performance with a power conversion efficiency of 4%, even though the polymer forms an amorphous film, which absorbed in a limited region of the spectrum. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：3226 / 3233

页数：7

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