Strain release of formamidinium-cesium perovskite with imprint-assisted organic ammonium halide compensation for efficient and stable solar cells

Xiaodong Hu, Cheng Zhu, Wenjun Zhang, Haixin Wang, Jianan Wang, Fumeng Ren, Rui Chen, Sanwan Liu, Xin Meng, Jing Zhou, Yongyan Pan, Xueying Tian, Derun Sun, Shasha Zhang, Yiqiang Zhang, Zonghao Liu^*, Qi Chen, Wei Chen