A novel acceptor with a N,N-dialkyl thieno[3 ',2 ':2,3]indolo[7,6-g]thieno[3,2-b]indole (TITI) core for organic solar cells with a high fill factor of 0.75

Zhang, X (Zhang, Xin); Ding, YQ (Ding, Yunqian); Wan, XJ (Wan, Xiangjian)^{[ 1 ]} ; Ke, X (Ke, Xin); Li, CX (Li, Chenxi); Chen, YS (Chen, Yongsheng)^{[ 1 ]}

CHEMICAL COMMUNICATIONS, 2020, 56(5): 751-753

DOI: 10.1039/c9cc08098h

摘要

A novel non-fullerene small molecule acceptor, TITI-4F, containing a N,N-dialkyl thieno[3 ',2 ':2,3]indolo[7,6-g]thieno[3,2-b]indole (TITI) core, was designed and synthesized. Photovoltaic devices based on PM6:TITI-4F can realize a high FF of 0.75, and a PCE of 10.89%. Our work demonstrates that TITI is a promising fused core for high quality acceptors.