Polymer Engineering Faculty Research

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

Document Type

Article

Publication Date

6-1-2011

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.

Publication Title

Journal of the American Chemical Society

Volume

133

Issue

25

First Page

9638

Last Page

9641