Polymerizing small molecular acceptors for efficient all-polymer solar cells  

作　　者：Yuxin Kong Yuxiang Li Jianyu Yuan Liming Ding 

机构地区：[1]School of Materials Science and Engineering,Xi'an University of Science and Technology,Xi'an,China [2]Institute of Functional Nano&Soft Materials,Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices,Soochow University,Suzhou,China [3]Center for Excellence in Nanoscience(CAS),Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS),National Center for Nanoscience and Technology,Beijing,China

出　　处：《InfoMat》2022年第3期1-8,共8页信息材料（英文）

基　　金：Natural Science Foundation of Jiangsu Province,Grant/Award Number:BK20211598;National Key Research and Development Program of China,Grant/Award Number:2017YFA0206600;Outstanding Youth Science and Technology Foundation of Xi'an University of Science and Technology,Grant/Award Number:2019YQ3-03;Science and Technology Program of Shaanxi Province,Grant/Award Number:2019JQ-244;National Natural Science Foundation of China,Grant/Award Numbers:21961160720,51922032,21772030,51773045,51803144,52073198,21905225。

摘　　要：All-polymer solar cells(all-PSCs)have received attention due to their morphological stability under thermal and mechanical stresses.Currently,the highest reported power conversion efficiency of all-PSCs is over 17%,achieved by utilizing polymerized small molecular acceptors(PSMAs).However,the need for higher regiospecificity to avoid forming isomers during polymerization of SMAs still challenges the further applications of all-PSCs.From this perspective,we focus on some recent studies and highlight the importance of controlling the regioregularity of PSMAs.In particular,integrating PSMAs with regioregularity endows the polymer acceptors with good absorption,superior backbone ordering,and optimal blend morphology compared with those obtained from regiorandom one.Moreover,the distinctive features that are derived from these regioregular PSMAs,such as the possibility of repeatable synthesis and reproducible device performance,herald a brighter future for scaling-up and commercializing all-PSCs.We expect this integrated strategy will inspire researchers to devote more efforts to further narrow the efficiency gap between the PSCs based on SMAs and PSMAs.Finally,we discuss the existing challenges and future prospects of PSMAs as new platform for further advancing all-PSCs.

关 键 词：all-polymer solar cells narrow bandgap polymerized small molecular acceptors power conversion efficiency REGIOREGULARITY 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TQ317[化学工程—高聚物工业]