title: Donor-acceptor conjugated polymer based on naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole for high-performance polymer solar cells.
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.
authors.affiliation: 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.
authors.forename: Ming
authors.initials: M
authors.lastname: Wang
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Hu
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Xiong
authors.initials: X
authors.lastname: Gong
authors.forename: Fei
authors.initials: F
authors.lastname: Huang
authors.forename: Yong
authors.initials: Y
authors.lastname: Cao