Nature CommunicationsMechanistic insight into α-to-δ phase transition and stabilizing α-phase FAPbI3 via regulating δ-phase orientationChuwu XingYongzhe LiQinhui BaoMiao HeZhiqiang LuYibin ZhangZhike LiuTianjin ZhangDuofa Wang2026-06-06Full textDOI https://doi.org/10.1038/s41467-026-73739-0