Side-chain engineering of high-efficiency conjugated polymer photovoltaic materials

作     者：Zhi-Guo Zhang Yongfang Li 

作者机构：Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2015年第58卷第2期

页      面：192-209页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the National Basic Research Program of China(2014CB643501) the National Natural Science Foundation of China(91433117,91333204 and 21374124) 

主　　题：polymer solar cells conjugated polymers side-chain engineering photovoltaic materials 2D-conjugated polymers 

摘      要：In recent years,conjugated polymers have attracted great attention in the application as photovoltaic donor materials in polymer solar cells(PSCs).Broad absorption,lower-energy bandgap,higher hole mobility,relatively lower HOMO energy levels,and higher solubility are important for the conjugated polymer donor materials to achieve high photovoltaic ***-chain engineering plays a very important role in optimizing the physicochemical properties of the conjugated *** this article,we review recent progress on the side-chain engineering of conjugated polymer donor materials,including the optimization of flexible side-chains for balancing solubility and intermolecular packing(aggregation),electron-withdrawing substituents for lowering HOMO energy levels,and two-dimension(2D)-conjugated polymers with conjugated side-chains for broadening absorption and enhancing hole *** the molecular structural optimization by side-chain engineering,the2D-conjugated polymers based on benzodithiophene units demonstrated the best photovoltaic performance,with powerconversion efficiency higher than 9%.