Surface stabilized cubic phase of CsPbI<sub>3</sub> and CsPbBr<sub>3</sub> at room temperature

Surface stabilized cubic phase of CsPbI₃ and CsPbBr₃ at room temperature

Yang Feng, Wang Cong, Pan Yuhao, Zhou Xieyu, Kong Xianghua, Ji Wei^‡

Side views of surface configurations. (a) Surface (001)-asym of cubic CsPbI₃ with the Pb, I atoms and Cs, I atoms at the different terminations. (b) Surface (010) of orthorhombic CsPbI₃. (c) Surface (001)-CsI and (d) surface (100)-3I of orthorhombic CsPbI₃. (e) Surface (001)-Cs and (f) surface (001)-4I of orthorhombic CsPbI₃. (g) Surface (001)-asym and (h) surface (110)-asym of orthorhombic CsPbBr₃ with Pb, Br atoms and Cs, Br atoms at the different terminations. (i) Surface (110) of cubic CsPbI₃.