Chlorinated phthalimide polymer donor as ultra-wide bandgap and deep HOMO guest for achieving highly efficient polymer solar cells  

作　　者：Weichao Zhang Jianhua Huang Xiaoyu Lv Ming Zhang Wanru Liu Tianzi Xu Jun Ning Alata Hexig Feng Liu Aiju Xu Chuanlang Zhan 

机构地区：[1]Inner Mongolia Autonomous University Key Laboratory of Advanced Materials Chemistry and Devices(AMC&DLab),Inner Mongolia Key Laboratory of Green Catalysis,College of Chemistry and Environmental Science,Inner Mongolia Normal University,Huhhot 010022,China [2]College of Materials Science and Engineering,Huaqiao University,Xiamen 361021,China [3]Inner Mongolia Key Laboratory of Functional Materials Physics and Chemistry,College of Physics and Electronic Information,Inner Mongolia Normal University,Hohhot 010022,China [4]School of Chemistry and Chemical Engineering,Center for Advanced Electronic Materials and Devices,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Chinese Chemical Letters》2023年第4期501-506,共6页中国化学快报（英文版）

基　　金：the financial support of the Department of Science and Technology of Inner Mongolia (No.2020GG0192);Grassland Talents (No. CYYC10031);Inner Mongolia Normal University (No. 112/1004031962);the financial support of Collaborative Innovation Center for Water Environment Security of Inner Mongolia Autonomous Region,China (No. XTCX003)。

摘　　要：Quaternary approach has been receiving more and more attention due to its effectiveness in improving solar cell performance, while synthesis/selection of the fourth component is yet a key issue. Herein, we report a chlorinated phthalimide based donor polymer(namely Ph I-Cl) having an ultra-wide bandgap(2.10 e V) and a deep HOMO(-5.58 e V) level. Addition of Ph I-Cl as the third component of PM6:Y6 and the fourth of PM6:Y6:PC71BM increases both hole and electron mobilities and gives rise to more balanced charge carriers mobilities. Both the short-circuit current-density and fill-factor are increased and open-circuit voltage is well maintained, delivering 17.0% and 18.1% efficiencies, respectively. These results demonstrate that chlorination on the side thiophene of phthalimide-based donor polymer is a way to make deep HOMO and ultra-wide bandgap donor polymer guest used for highly efficient ternary and quaternary strategies.

关 键 词：Phthalimide polymer donor Quaternary strategy Polymer solar cell Wide bandgap Fullerene-free 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TQ317[化学工程—高聚物工业]