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

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• 作者：Tao Liu ; Xuexue Pan ; Xiangyi Meng ; Yu Liu ; Donghui Wei ; Wei Ma ; Lijun Huo ; Xiaobo Sun ; Tack Ho Lee ; Minjuan Huang ; Hyosung Choi ; Jin Young Kim ; Wallace C. H. Choy and Yanming Sun
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：February 10, 2017
• 年：2017
• 卷：29
• 期：6
• 全文大小：1364K
• ISSN：1521-4095

文摘

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.