Ternary strategy: An analogue as third component reduces the energy loss and improves the efficiency of polymer solar cells

作     者：Longzhu Liu Hanjian Lai Feng He Longzhu Liu;Hanjian Lai;Feng He

作者机构：School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Shenzhen Grubbs Institute and Department of ChemistrySouthern University of Science and TechnologyShenzhen 518055GuangdongChina Guangdong Provincial Key Laboratory of CatalysisSouthern University of Science and TechnologyShenzhen 518055GuangdongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第7期

页      面：67-73,I0003页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：the financial support from the National Natural Science Foundation of China(21975115,21733005) the Shenzhen Fundamental Research Program(JCYJ20190809163011543,JCYJ20200109140801751) the Guangdong Provincial Key Laboratory of Catalysis(2020B121201002) the Guangdong Innovative and Entrepreneurial Research Team Program(2016ZT06G587) the Shenzhen Sci-Tech Fund(KYTDPT20181011104007) 

主　　题：Polymer solar cell Ternary strategy Energy loss Trade-off 

摘      要：Ternary strategy is a convenient and effective method to boost the performance of polymer solar cells(PSCs).Utilizing a ternary strategy to trade-off between the energy loss and the efficiency of devices however requires further ***,through the hydroxyl(-OH)and acetoxy(-OCOMe)substitution atβ-position of the IC terminal group,we developed two new synthetic acceptors,BTIC-OH-βand BTICOCOMe-β,which were designed to confine the morphology *** of an analogue as the third component provides a simple but efficient way to further balance the short current density(Jsc)and open-circuit voltage(Voc),leading to a champion efficiency based on PBDB-T:PBDB-TF:BTIC-OCOMe-β,effectively as high as 12.45%.The results were examined mainly in terms of the morphology characterization,electroluminescence external quantum efficiency(EQEEL),steady-state photoluminescence(PL)and transient *** suggested fine-tuning of the morphology by ratio modulation,reduction of the energy loss,construction of a promising pathway for charge transfer in the ternary system and enhancing the carrier *** this way,a ternary strategy with an analogue donor could provide more routes to higher-quality solar cells.