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†,10.1039/C4RA14532A

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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†

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

RSC Advances Pub Date : 01/15/2015 00:00:00 , DOI:10.1039/C4RA14532A

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.