Improved charge transport and absorption coefficient in indacenodithieno[3,2-b]thiophene-based ladder-type polymer leading to highly efficient polymer solar cells

Yun-Xiang Xu; Chu-Chen Chueh; Hin-Lap Yip; Fei-Zhi Ding; Yong-Xi Li; Chang-Zhi Li; Xiaosong Li; Wen-Chang Chen; Alex K-Y Jen

doi:10.1002/adma.201203246

Improved charge transport and absorption coefficient in indacenodithieno[3,2-b]thiophene-based ladder-type polymer leading to highly efficient polymer solar cells

Adv Mater. 2012 Dec 11;24(47):6356-61. doi: 10.1002/adma.201203246. Epub 2012 Sep 24.

Authors

Yun-Xiang Xu¹, Chu-Chen Chueh, Hin-Lap Yip, Fei-Zhi Ding, Yong-Xi Li, Chang-Zhi Li, Xiaosong Li, Wen-Chang Chen, Alex K-Y Jen

Affiliation

¹ Department of Materials Science and Engineering, University of Washington, Seattle, 98195, USA.

PMID: 23001969
DOI: 10.1002/adma.201203246

Abstract

A novel ladder-type donor (IDTT) is developed by substituting the two outward thiophenes of the IDT donor with two thieno[3,2-b]thiophenes. The polymer derived from this donor possesses longer effective conjugation and better planarity, which improves electron delocalization along the polymer backbone and charge mobility. The polymer solar cell device using PIDTT-DFBT shows a high power conversion efficiency of 7.03% with a large open-circuit voltage of 0.95 V without using any additives or post-solvent/thermal annealing processes.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.