Alkyl Side-Chain Engineering in Wide-Bandgap Copolymers Leading to Power Conversion Efficiencies over 10%

作者：Liu, Tao; Pan, Xuexue; Meng, Xiangyi; Liu, Yu; Wei, Donghui; Ma, Wei; Huo, Lijun^*; Sun, Xiaobo; Lee, Tack Ho; Huang, Minjuan; Choi, Hyosung; Kim, Jin Young; Choy, Wallace C. H.; Sun, Yanming^*

来源：Advanced Materials, 2017, 29(6): 1604251.

DOI：10.1002/adma.201604251

• POLYMER SOLAR-CELLS
• PHOTOVOLTAIC PERFORMANCE
• CONJUGATED POLYMER
• ELECTRON-ACCEPTOR
• GAP COPOLYMERS
• FILM

A series of wide-bandgap (WBG) copolymers with different alkyl side chains are synthesized. Among them, copolymer PBT1-EH with moderatly bulky side chains on the acceptor unit shows the best photovoltaic performance with power conversion efficiency over 10%. The results suggest that the alkyl side-chain engineering is an effective strategy to further tuning the optoelectronic properties of WBG copolymers.

• 出版日期2017-2-10
• 单位北京航空航天大学; 郑州大学; 西安交通大学