A simple structure copolymer donor based on carboxylated benzodithiophene for polymer solar cells

作     者：Xiaochen Wang Rui Zhao Zicheng Ding Shengzhong(Frank)Liu Yongfang Li 

作者机构：School of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologyShaanxi Normal UniversityXi’an 710119China Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2022年第65卷第9期

页      面：1775-1781页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(51773046) the Fundamental Research Funds for the Central Universities the School of Materials Science and Engineering,Shaanxi Normal University 

主　　题：polymer donor carboxylate benzodithiophene(BDT) low-cost polymer solar cells(PSCs) 

摘      要：The design and development of low-cost and efficient photovoltaic materials remain a major challenge for the research and application of polymer solar cells(PSCs).Therefore,developing efficient photovoltaic polymers with simple structure and easy preparation has become an important research *** we report a facilely synthesized electron-donating polymer X1 with a simple chemical structure,which is composed of carboxylated benzo[1,2-b:4,5-b′]dithiophene(BDT)and thiophene *** carboxylate substituents on the BDT unit endowed the polymer with appropriate solubility,low-lying highest occupied molecular orbital(HOMO)energy level,and superior *** PSCs based on X1 as the donor showed a high power conversion efficiency of 16.6%,with a remarkable short-circuit current density of 27.07 m A cm^(-2).These results demonstrated that X1 is a highly promising candidate for low-cost and efficient ***,this study revealed the potential of carboxylated BDT as an effective building block in the research and development of high-performance photovoltaic materials.