title: Sulfonyl: a new application of electron-withdrawing substituent in highly efficient photovoltaic polymer.
abstract: A strong electron-withdrawing group, sulfonyl, was firstly introduced to a semiconducting polymer, PBDTTT-S. The PCE of the PBDTTT-S device reached 6.22% with a high open-circuit voltage of 0.76 V. The sulfonyl group is thus a promising candidate as a strong electron-withdrawing group applied to high-efficiency PSCs.
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: Ye
authors.initials: Y
authors.lastname: Huang
authors.forename: Lijun
authors.initials: L
authors.lastname: Huo
authors.forename: Shaoqing
authors.initials: S
authors.lastname: Zhang
authors.forename: Xia
authors.initials: X
authors.lastname: Guo
authors.forename: Charles C
authors.initials: CC
authors.lastname: Han
authors.forename: Yongfang
authors.initials: Y
authors.lastname: Li
authors.forename: Jianhui
authors.initials: J
authors.lastname: Hou