A star-shaped oligothiophene end-capped with alkyl cyanoacetate groups for solution-processed organic solar cells.
A star-shaped oligothiophene based on triphenylamine as a core and 2-ethylhexyl cyanoacetate as end groups (S(TPA-3T-CA)) was synthesized. S(TPA-3T-CA) exhibited strong absorption and high hole mobility. Solution-processed solar cells based on S(TPA-3T-CA):PC(71)BM showed a power conversion efficiency of 3.60% and a fill factor of 0.56.
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Yuze
Y
Lin
Zhi-Guo
ZG
Zhang
Huitao
H
Bai
Yongfang
Y
Li
Xiaowei
X
Zhan