title: A thieno[3,4-c]pyrrole-4,6-dione-based copolymer for efficient solar cells.
abstract: A new low-band-gap thieno[3,4-c]pyrrole-4,6-dione-based copolymer, PBDTTPD, has been designed and synthesized. PBDTTPD is soluble in chloroform or o-dichlorobenzene upon heating and shows a broad absorption in the visible region. The HOMO and LUMO energy levels were estimated to be at -5.56 and -3.75 eV, respectively. These electrochemical measurements fit well with an optical bandgap of 1.8 eV. When blended with PC(71)BM, this polymer demonstrated a power conversion efficiency of 5.5% in a bulk-heterojunction photovoltaic device having an active area of 1.0 cm(2).
authors.affiliation: Département de Chimie, Université Laval, Quebec City, QC, Canada G1V 0A6.
authors.forename: Yingping
authors.initials: Y
authors.lastname: Zou
authors.forename: Ahmed
authors.initials: A
authors.lastname: Najari
authors.forename: Philippe
authors.initials: P
authors.lastname: Berrouard
authors.forename: Serge
authors.initials: S
authors.lastname: Beaupré
authors.forename: Badrou Réda
authors.initials: BR
authors.lastname: Aïch
authors.forename: Ye
authors.initials: Y
authors.lastname: Tao
authors.forename: Mario
authors.initials: M
authors.lastname: Leclerc