Donor-acceptor conjugated polymer based on naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole for high-performance polymer solar cells

Ming Wang; Xiaowen Hu; Peng Liu; Wei Li; Xiong Gong; Fei Huang; Yong Cao

doi:10.1021/ja201131h

Donor-acceptor conjugated polymer based on naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole for high-performance polymer solar cells

J Am Chem Soc. 2011 Jun 29;133(25):9638-41. doi: 10.1021/ja201131h. Epub 2011 Jun 6.

Authors

Ming Wang¹, Xiaowen Hu, Peng Liu, Wei Li, Xiong Gong, Fei Huang, Yong Cao

Affiliation

¹ Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Physics and Chemistry of Luminescence, South China University of Technology, Guangzhou 510640, P. R. China.

PMID: 21630707
DOI: 10.1021/ja201131h

Abstract

Donor-acceptor conjugated polymers PBDT-DTBT and PBDT-DTNT, based on 2,1,3-benzothiadiazole (BT) and naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole (NT), have been designed and synthesized for polymer solar cells. NT contains two fused 1,2,5-thiadiazole rings that lower the band gap, enhance the interchain packing, and improve the charge mobility of the resulting polymer. Consequently, the NT-based polymer PBDT-DTNT exhibited considerably better photovoltaic performance with a power conversion efficiency (PCE) of 6.00% when compared with the BT-based polymer PBDT-DTBT, which gave a PCE of 2.11% under identical device configurations.