Design and Synthesis of Acceptor-Donor-Acceptor Type Non-Fullerene Acceptors Using Oxindole-Based Bridge for Polymer Solar Cells Applications  

作　　者：GUO Yuqing HUANG Jun LI Zheng WU Hongbo WANG Jing TANG Zheng MA Zaifei WANG Ming ZHU Zhijia 郭雨晴;黄峻;李正;吴宏波;王静;唐正;马在飞;王明;朱智甲

机构地区：[1]Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai 201620, China [2]Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China

出　　处：《Journal of Donghua University(English Edition)》2022年第3期272-280,共9页东华大学学报（英文版）

基　　金：National Natural Science Foundation of China(No.21805032);Natural Science Foundation of Shanghai,China(No.19ZR1401400);Fundamental Research Funds for the Central Universities,China(No.20D128502).

摘　　要：Two acceptor-donor-acceptor(A-D-A)type non-fullerene acceptors(namely WH1 and WH7)containing the oxindole-based bridge are designed and synthesized for polymer solar cells(PSCs)applications.The bridge unit is introduced through a precursor(6-bromo-1-octylindoline-2,3-dione)that contains both bromine and carbonyl and provides the feasibility of the Pd-catalyzed cross-coupling reaction and the Knoevenagel condensation,respectively.This facile synthetic approach exhibits the potential to gain high performance non-fullerene acceptors through extendingπ-conjugated backbone with strong light-absorbing building blocks.The synthesis and properties of WH1 and WH7 are demonstrated with different endcap units,then PSCs are fabricated using PBDB-T:WH1 and PBDB-T:WH7 as the active layers,and attain an average power conversion efficiency(PCE)of 2.58%and 6.24%,respectively.Further device physics studies afford the deep insight of structure variation influence on the device performance.This work provides a facile non-fullerene acceptor design strategy and shows how structure variations impact the PSC performance.

关 键 词：non-fullerene acceptor polymer solar cell(PSC) conjugated molecules donor-acceptor(D-A) narrow bandgap 

分 类 号：O649.4[理学—物理化学]