title: Synthesis of a polythieno[3,4-b]thiophene derivative with a low-lying HOMO level and its application in polymer solar cells.
abstract: A planar benzodithiophene with lower HOMO was copolymerized with the thieno[3,4-b]thiophene unit to obtain a new low band gap polymer of PBDPTT-C, which exhibited a higher open-circuit voltage (V(oc)) of 0.8 V and a promising efficiency of 5.2%.
authors.affiliation: State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Huo
authors.forename: Xia
authors.initials: X
authors.lastname: Guo
authors.forename: Yongfang
authors.initials: Y
authors.lastname: Li
authors.forename: Jianhui
authors.initials: J
authors.lastname: Hou