D–π–A–π–D type benzothiadiazole–triphenylamine based small molecules containing cyano on the π-bridge for solution-processed organic solar cells with high open-circuit voltage

Shaohang Zeng; Lunxiang Yin; Changyan Ji; Xueying Jiang; Kechang Li; Yanqin Li; Yue Wang

doi:10.1039/C2CC35754B

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Chemical Communications

Issue 86, 2012

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D–π–A–π–D type benzothiadiazole–triphenylamine based small molecules containing cyano on the π-bridge for solution-processed organic solar cells with high open-circuit voltage

Shaohang Zeng,^a Lunxiang Yin,^a Changyan Ji,^a^b Xueying Jiang,^b Kechang Li,^b Yanqin Li*^a and Yue Wang*^b

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School of Chemistry, Dalian University of Technology, Dalian, China
E-mail: liyanqin@dlut.edu.cn ;
Fax: +86-411-84986040 ;
Tel: +86-411-84986040

State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, China

Chem. Commun., 2012,48, 10627-10629

DOI: 10.1039/C2CC35754B
Received 08 Aug 2012, Accepted 10 Sep 2012
First published online 11 Sep 2012

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Two novel D–π–A–π–D structured small molecules composed of benzothiadiazole and triphenylamine were designed and synthesized. BDCTBT with cyano on the π-bridge exhibited a deep HOMO energy level, resulting in an impressive V_OC of up to 1.04 V with a PCE of 3.85%, while non-cyano substituted BDETBT yielded a V_OC of 0.94 V and a PCE of 1.99%.

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Shaohang Zeng
Lunxiang Yin
Changyan Ji
Xueying Jiang
Kechang Li
Yanqin Li
Yue Wang

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Chemical Communications

D–π–A–π–D type benzothiadiazole–triphenylamine based small molecules containing cyano on the π-bridge for solution-processed organic solar cells with high open-circuit voltage

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D–π–A–π–D type benzothiadiazole–triphenylamine based small molecules containing cyano on the π-bridge for solution-processed organic solar cells with high open-circuit voltage

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