title: Tetrathienoanthracene-based copolymers for efficient solar cells.
abstract: A series of semiconducting copolymers (PTAT-x) containing extended π-conjugated tetrathienoanthracene units have been synthesized. It was shown that the extended conjugation system enhanced the π-π stacking in the polymer/PC(61)BM blend films and facilitated the charge transport in heterojunction solar cell devices. After structural fine-tuning, the polymer with bulky 2-butyloctyl side chains (PTAT-3) exhibited a PCE of 5.6% when it was blended with PC(61)BM.
authors.affiliation: Department of Chemistry and The James Franck Institute, The University of Chicago, 929 E 57th Street, Chicago, Illinois 60637, United States.
authors.forename: Feng
authors.initials: F
authors.lastname: He
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Tao
authors.initials: T
authors.lastname: Xu
authors.forename: Seth B
authors.initials: SB
authors.lastname: Darling
authors.forename: Joseph
authors.initials: J
authors.lastname: Strzalka
authors.forename: Yun
authors.initials: Y
authors.lastname: Liu
authors.forename: Luping
authors.initials: L
authors.lastname: Yu