Nonfullerene Acceptor Featuring Unique Self‐Regulation Effect for Organic Solar Cells with 19 % Efficiency. - Liu, Feng; Jiang, Yuanyuan; Xu, Renjie; Su, Wenli; Wang, Shijie; Zhang, Yaogang; Liu, Kerui; Xu, Shengjie; Zhang, Wenkai; Yi, Yuanping; Ma, Wei; Zhu, Xiaozhang (Angewandte Chemie, 2024)