Effects of Side Chains on Thiazolothiazole-Based Copolymer Semiconductors for High Performance Solar Cells

被引：186

作者：

Subramaniyan, Selvam ^{[1
,2
]}

Xin, Hao ^{[1
,2
]}

Kim, Felix Sunjoo ^{[1
,2
]}

Shoaee, Safa ^{[3
]}

Durrant, James R. ^{[3
]}

Jenekhe, Samson A. ^{[1
,2
]}

机构：

[1] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA

[2] Univ Washington, Dept Chem, Seattle, WA 98195 USA

[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

来源：

ADVANCED ENERGY MATERIALS | 2011年 / 1卷 / 05期

关键词：

POWER CONVERSION EFFICIENCY; PHOTOVOLTAIC PROPERTIES; CHARGE-TRANSPORT; POLYMERS; DONOR; CYCLOPENTADITHIOPHENE; MOBILITY;

D O I：

10.1002/aenm.201100215

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

New thiazolothiazole-dithienosilole copolymer semiconductors bearing side chains of different type, size, and topology were synthesized and used to demonstrate the influence of side chains on morphology, charge transport and photovoltaic properties. The field effect mobility of holes varied from 0.01-0.03 cm(2)V(-1)s(-1) in PSOTT and PSEHTT to 0.12 cm(2)V(-1)s(-1) in PSOxTT. The average power conversion efficiency of solar cells under 1.0 sun illumination could be varied from 2.1% in PSOxTT and 4.1% in PSOTT to 5.0% in PSEHTT. The highest photovoltaic efficiency achieved in PSEHTT, that has all-branched alkyl side chains and face-on pi-stacking orientation, was corroborated by its enhanced charge photogeneration observed by transient absorption spectroscopy.

引用

页码：854 / 860

页数：7

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