Yuandong Sun, Liang Wang, Chuanhang Guo, Jinyi Xiao, Chenhao Liu, Chen Chen, Weiyi Xia, Zirui Gan, Jingchao Cheng, Jinpeng Zhou, Zhenghong Chen, Jing Zhou, Dan Liu, Tao Wang, Wei Li
Organic photovoltaics (OPVs) suffer from a trade-off between efficient charge transport and suppressed nonradiative recombination due to the aggregation-induced luminance quenching of organic semiconductors. To resolve this grand challenge, a π-extended nonfullerene acceptor (NFA) B6Cl with large voids among the honeycomb network is designed and introduced into photovoltaic systems. We find that the presence of a small amount of (i.e., 0.5 or 1 wt %) B6Cl can compress the molecular packing of the host acceptor L8-BO, leading to shortened π-π stacking distance from 3...
April 19, 2024: Journal of the American Chemical Society