结晶度
有机太阳能电池
轨道能级差
三元运算
材料科学
光伏
化学
活动层
开路电压
光电子学
光伏系统
图层(电子)
纳米技术
聚合物
电压
分子
有机化学
物理
复合材料
计算机科学
电气工程
工程类
程序设计语言
薄膜晶体管
量子力学
作者
Cenqi Yan,Ruijie Ma,Guilong Cai,T Liu,Jingshuai Zhu,J Wang,Y Li,Jiaming Huang,Zhenghui Luo,Yiqun Xiao,Xinhui Lu,Yongzhen Yang,Xiaowei Zhan,He Yan,G Li
出处
期刊:EcoMat
[Wiley]
日期:2020-10-26
卷期号:2 (4)
被引量:23
摘要
Abstract The ternary strategy is effectual to attain high‐performance organic photovoltaics (OPVs). Herein, device processing and performance of PM6:Y6:IT‐4F OPVs is improved, and ITIC‐Th with high‐lying lowest unoccupied molecular orbital is incorporated into PM6: Y6 blend. The PM6:Y6: ITIC‐Th device afforded an excellent PCE of 17.2%, surpassing PM6: Y6 device, and becoming one of the highest PCE. The resulting ITIC‐Th‐based ternary OSCs demonstrated low energy loss ( E loss ) of 0.53 to 0.54 eV, as compared to their binary counterparts with either high open‐circuit voltage ( V OC ) but large E loss , or less E loss but low V OC . The incorporation of ITIC‐Th and IT‐4F balanced the charge mobilities, and thereby retained and improved fill factors. Increased crystalline coherence length and smaller d‐spacing of π ‐ π peaks are also observed in ternary blends, indicating enhanced crystallinity and thus improved active‐layer morphology. These findings demonstrate the feasibility of exploring the exciting pool of nonfullerene acceptors to pursue new breakthroughs of OPVs. image
科研通智能强力驱动
Strongly Powered by AbleSci AI