Side-Chain Engineering of Non-Fullerene Acceptors with Trialkylsilyloxy Groups for Enhanced Photovoltaic Performancet  

作　　者：Qingyuan Wang Qi Chen Shixin Meng Li Tian Haiqiao Wang Yu Chen Zitong Liu Lingwei Xue Zhi-Guo Zhang 

机构地区：[1]State Key Laboratory of Chemical Resource Engineering,Beijing Advanced Innovation Center for Soft Matter Science and Engineering,BeijingUniversityof Chemical Technology,Beijing 100029,China [2]School of Materials Science and Engineering,Henan University of Technology,Zhengzhou,Henan 450001,China [3]Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers,Beijing University of Chemical Technology,Beijing100029,China [4]The Institute of High Energy Physics,Chinese Academy of Sciences,Bejing 100049,China [5]state Key Laboratory of Applied Organic Chemistry(SKLAoc),College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou,Gansu730000,China [6]Yaoshan Laboratory,Pingdingshan University,Pingdingshan,Henan 467000,China

出　　处：《Chinese Journal of Chemistry》2024年第18期2153-2160,共8页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52373168,22175014,12375302);Fundamental Research Funds for the Central Universities(buctrc201822);Beijing Natural Science Foundation(QNTD20,2232057);Natural Science Foundation of Henan province(No.232300420103).

摘　　要：Side-chain engineering has emerged as a highly effective strategy for tailoring the aggregation behavior and charge transport properties of non-fullerene small molecule acceptors(SMAs).In this study,we designed and synthesized two SMAs,namely BTPSi-Bu and BTPSi-Pr,respectively incorporating tributylsilyloxy and trisopropylsilyloxy groups in their outer positions.Notably,BTPSi-Bu exhibited better planarity,crystallization,and favorable phase separation when paired with PM6 donor polymer compared to its counterpart,BTPSi-Pr.The resulting organic solar cells,utilizing the PM6:BTPSi-Bu blend,demonstrated a remarkable power conversion efficiency of 17.41%and a high open-circuit voltage of 0.859 V.These findings underscore the significance of integrating trialkylsilyloxy side chains into SMAs as a rational design approach for enhancing the performance of photovoltaic systems.

关 键 词：Organic solar cells Non-fullerene acceptors Oligomers Side-chain engineering Energy conversion Synthesis design Donor-acceptor systems 

分 类 号：O62[理学—有机化学]