From Perylene Dimide Polymers to Fused-Ring Electron Acceptors:A 15-Year Exploration Journey of Nonfullerene Acceptors  

作　　者：Jiayu Wang Xiaowei Zhan 

机构地区：[1]Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,School of Materials Science and Engineering,Peking University,Beijing100871,China

出　　处：《Chinese Journal of Chemistry》2022年第13期1592-1607,共16页中国化学（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China(U21A20101).

摘　　要：Fullerene derivatives are classic electron acceptor materials for organic solar cells (Oscs) but possess some intrinsic drawbacks such as weak visiblelightabsorption,limitedoptoelectronic property tunability,dificult purification and photochemical/morphological instability.Fullereneacceptors area bottleneck restricting further development of this field. Ourgroup pioneered the exploration of novel nonfulerene acceptors in China in 2006,andinitiated the research of two representative acceptor systems, rylene dimide polymer and fused-ring electron acceptor (FREA).FREA breaks the theoreticalefficiencylimit of fullerene-based OsCs (-13%) and promotes the whole field to an unprecedented prosperity with efficiency of 20%, heraldinga nonfullerene era for OsCs.In this review, we revisit 15-year nonfullerene exploration journey,summarize the design principles,molecular engineeringstrategies, physical mechanisms and device applications of these two nonfullerene acceptor systems, and propose some possible researchtopics in the nearfuture.

关 键 词：Energyconversion SEMICONDUCTORS Electron-deficient compounds Rylene dimides Fused-ring electron acceptors 

分 类 号：TB34[一般工业技术—材料科学与工程]