Spiro-Linked Planar Core Small Molecule Hole Transport Materials Enabling High-Performance Inverted Perovskite Solar Cells - Zhixin Liu; Jie Zeng; Deng Wang; Peide Zhu; Lida Wang; Yuqi Bao; Yintai Xu; Wenbo Peng; Siru He; Zhiwei Lei; Lihan Pang; Bo Jiang; et al. (Journal of the American Chemical Society, 2025)