Alkyl chain engineering on a dithieno[3,2-b:2',3'-d]silole-alt-dithienylthiazolo[5,4-d]thiazole copolymer toward high performance bulk heterojunction solar cells

Zhi-Guo Zhang; Jie Min; Siyuan Zhang; Jing Zhang; Maojie Zhang; Yongfang Li

doi:10.1039/c1cc13477a

Alkyl chain engineering on a dithieno[3,2-b:2',3'-d]silole-alt-dithienylthiazolo[5,4-d]thiazole copolymer toward high performance bulk heterojunction solar cells

Chem Commun (Camb). 2011 Sep 7;47(33):9474-6. doi: 10.1039/c1cc13477a. Epub 2011 Jul 22.

Authors

Zhi-Guo Zhang¹, Jie Min, Siyuan Zhang, Jing Zhang, Maojie Zhang, Yongfang Li

Affiliation

¹ Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

PMID: 21785761
DOI: 10.1039/c1cc13477a

Abstract

A new copolymer of dithienosilole and dithienylthiazolo[5,4-d]thiazole with a hexyl side chain on the 4-position of thiophene units was designed and synthesized. Polymer solar cells based on the polymer as a donor and PC(70)BM as an acceptor demonstrated a power conversion efficiency up to 5.88% with a high fill factor of 71.6%.