Surface stabilized cubic phase of CsPbI3 and CsPbBr3 at room temperature
Yang Feng, Wang Cong, Pan Yuhao, Zhou Xieyu, Kong Xianghua, Ji Wei ‡
       

Schematic models and thermal stability of bulk CsPbBr 3 in cubic and orthorhombic phases. (a) Perspective view of the high temperature cubic phase bulk CsPbBr3. (b)–(d) Top- and side-views of the low temperature orthorhombic phase bulk CsPbBr3. Purple, gray and brown balls represent Cs, Pb and Br atoms, respectively. (e) Thermal stability of bulk CsPbBr3 in cubic (orange line) and orthorhombic (green) phases.