Nature CommunicationsInterfacial ferroelectricity unlocks stable formamidinium-based perovskitesYong WangWenbin HanXingtao WangBiao LiYehui WenTianchi ZhangMiao KanDongming ZhaoYu WangWeihua NingXuegong YuDeren Yang2025-10-28Full textDOI https://doi.org/10.1038/s41467-025-64545-1