An alkylthieno-2-yl flanked dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-based low band gap conjugated polymer for high performance photovoltaic solar cells

Pengzhi Guo; Yangjun Xia; Fei Huang; Guoping Luo; Jianfeng Li; Peng Zhang; Yuancheng Zhu; Chunyan Yang; Hongbin Wu; Yong Cao

doi:10.1039/C4RA14532A

An alkylthieno-2-yl flanked dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-based low band gap conjugated polymer for high performance photovoltaic solar cells†

Pengzhi Guo,^a Yangjun Xia,*^a Fei Huang,*^b Guoping Luo,^b Jianfeng Li,^a Peng Zhang,^a Yuancheng Zhu,^c Chunyan Yang,^a Hongbin Wu^b and Yong Cao^b

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* Corresponding authors

^a Key Lab of Optoelectronic Technology and Intelligent Control of Education Ministry, Lanzhou Jiaotong University, Lanzhou, Gansu Province, China
E-mail: yjxia73@126.com
Fax: +86-093-1485-6058
Tel: +86-039-1495-6022

^b Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
E-mail: msfhuang@scut.edu.cn
Fax: +86-020-8711-0606
Tel: +86-020-8711-4346

^c College of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Abstract

A low band gap conjugated polymer derived from alkylthieno-2-yl flanked dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene and a naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole derivative was first synthesized, and high performance inverted photovoltaic solar cells with a power conversion efficiency of 7.52% have been demonstrated.

RSC Advances

An alkylthieno-2-yl flanked dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-based low band gap conjugated polymer for high performance photovoltaic solar cells†

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An alkylthieno-2-yl flanked dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-based low band gap conjugated polymer for high performance photovoltaic solar cells

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