Nature CommunicationsTensile strain regulation via grain boundary buffering for flexible perovskite solar cellsZhiyang XuRunnan YuQianglong LvHaoran JiaQiang GuoTangyue XueRuyue WangHuaizhi GaoErjun ZhouZhan’ao Tan2025-12-01Full textDOI https://doi.org/10.1038/s41467-025-67027-6