Synthesis and Photovoltaic Properties of a Poly(2,7-carbazole) Derivative Based on Dithienosilole and Benzothiadiazole

✍ Scribed by Jiaoyan Zhou; Xiangjian Wan; Yongsheng Liu; Fei Wang; Guankui Long; Chenxi Li; Yongsheng Chen

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 381 KB
• Volume: 212
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.201100060

✦ Synopsis

Abstract

A low bandgap poly(2,7‐carbazole) derivative PCDSBT containing dithienosilole and benzothiadiazole is synthesized by Stille polymerization. The incorporation of dithienosilole and carbazole causes PCDSBT to have a broad absorption from 350 to 800 nm and a relatively low HOMO level. Solar cell devices fabricated by blending PCDSBT with [6,6]‐phenyl‐C~61~‐butyric acid methyl ester (PC~61~BM) at a 1:2 weight ratio in a mixed solvent of 3% (by volume), 1,8‐diiodooctane, and 97% dichlorobenzene lead to a power conversion efficiency of 1.65% under the illumination of AM 1.5G (100 mW · cm^−2^).
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