Rhodanine flanked indacenodithiophene as non-fullerene acceptor for efficient polymer solar cells

作     者：Boyu Jia Yao Wu Fuwen Zhao Cenqi Yan Siya Zhu Pei Cheng Jiangquan Mai Tsz-Ki Lau Xinhui Lu Chun-Jen Su Chunru Wang Xiaowei Zhan 

作者机构：Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationDepartment of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing 100871China Institute of ChemistryChinese Academy of SciencesBeijing 100190China Department of PhysicsChinese University of Hong KongNew TerritoriesHong KongChina National Synchrotron Radiation Research CenterTaiwan 30076China 

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

年 卷 期：2017年第60卷第2期

页      面：257-263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] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the National Basic Research Program of China(2013CB834702) the National Natural Science Foundation of China(91433114) 

主　　题：有机太阳能电池 电子受体 罗丹宁 富勒烯 聚合物 分子轨道 LUMO 苯并噻二唑 

摘      要：A fused-ring electron acceptor IDT-2BR1 based on indacenodithiophene core with hexyl side-chains flanked by benzothiadiazole rhodanine was designed and *** comparison with its counterpart with hexylphenyl side-chains(IDT-2BR),IDT-2BR1exhibits higher highest occupied molecular orbital(HOMO)energy but similar lowest unoccupied molecular orbital(LUMO)energy(IDT-2BR1:HOMO=-5.37eV,LUMO=-3.67eV;IDT-2BR:HOMO=-5.52eV,LUMO=-3.69eV),red-shifted absorption and narrower ***-2BR1 has higher electron mobility(2.2×10^(-3)cm^2 V^(-1)s^(-1))than IDT-2BR(3.4×10^(-4)cm^2 V^(-1)s^(-1))due to the reduced steric hindrance and ordered molecular ***-free organic solar cells based on PTB7-Th:IDT-2BRl yield power conversion efficiencies up to 8.7%,higher than that of PTB7-Th:IDT-2BR(7.7%),with a high open circuit voltage of0.95 V and good device stability.