A new chlorinated non-fullerene acceptor based organic photovoltaic cells over 12%efficiency

作     者：CAO Rui CHEN Yu CAI Fang-fang CHEN Hong-gang LIU Wei GUAN Hui-lan WEI Qing-ya LI Jing CHANG Qin LI Zhe ZOU Ying-ping 曹睿;陈瑜;蔡方方;陈泓钢;刘玮;管慧兰;魏擎亚;李静;常秦;李哲;邹应萍

作者机构：College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China 

基　　金：Project(21875286)supported by the National Natural Science Foundation of China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2020年第27卷第12期

页      码：3581-3593页

摘      要：The method to fluorinate the terminal group has achieved remarkable success and been widely used to fine-tune the intrinsic properties of organic acceptor *** to chlorination,however,it gets less attention and remains ambiguous effect on organic photovoltaic(OPV)***,a new non-fullerene acceptor named Y19 was reported with benzotriazole as the electron-deficient core and 2Cl-ICs as the strong electron-withdrawing end groups.Y19 exhibits a wide film absorption band from 600 nm to 948 nm and low LUMO(the lowest unoccupied molecular orbital)energy level of−3.95 *** devices based on PM6:Y19 show high-power conversion efficiency(PCE)of 12.76%with high open-circuit voltage(Voc)of 0.84 V,short-circuit current density(Jsc)of 22.38 mA/cm2 and fill factor(FF)of 68.18%.Broad external quantum efficiency(EQE)response of over 60%in the range of 480−860 nm can be *** study demonstrates that chlorination,as a low-cost molecular design strategy,has its own superiorities to improve device performance and promote the potential application in OPV.

主 题 词：non-fullerene acceptor chlorination electron-deficient core device performance 

学科分类：08[工学] 080501[080501] 080502[080502] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1007/s11771-020-4501-0

馆 藏 号：203986066...