An asymmetric acceptor enabling 77.51% fill factor in organic solar cells  

基于非对称受体的有机太阳能电池实现77.51%的填充因子

作　　者：Jinru Cao Shenya Qu Linqiang Yang Hongtao Wang Jiangsheng Yu Weihua Tang 曹金如;屈沈雅;杨琳强;王宏涛;俞江升;唐卫华(School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;MIIT Key Laboratory of Advanced Solid Laser,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China [2]MIIT Key Laboratory of Advanced Solid Laser,Nanjing University of Science and Technology,Nanjing 210094,China

出　　处：《Science Bulletin》2020年第22期1876-1879,M0003,共5页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China (21875111, 21905137, 51573077 and 51861145401);Natural Science Foundation of Jiangsu Province (BK20180496)。

摘　　要：Organic solar cells(OSCs)have attracted great attention due to their advantages of light weight,low cost and flexible devices fab-rication[1-3].Featuring a sandwitch structure,OSCs commonly adopt heterojunction blends of polymer donors and fullerene(or nonfullerene)based acceptors as light-absorbing layer.With the combinational efforts of materials development and device engi-neering/physics[4],OSCs have recently achieved power conversion efficiencies(PCEs)over 18%in single-junction devices[1].填充因子与有机太阳能电池的效率密切相关.本文在本课题组成功开发的高效受体IPT-2F上引入二维侧链,设计合成了具有相对加深的HOMO能级、带隙略微拓宽的新型非对称受体IPT2F-TCl.基于IPT2F-TCl和PBDB-T的二元单节有机太阳能电池获得了77.51%的填充因子和13.74%的效率.该填充因子是目前基于PBDB-T给体和非对称受体的太阳能电池中的最高值.该研究也为今后改善有机太阳能电池的填充因子和效率提供了思路.

关 键 词：有机太阳能电池 填充因子 设计合成 非对称 IPT 受体 

分 类 号：TM914.4[电气工程—电力电子与电力传动]