New Metallic Ordered Phase of Perovskite CsPbI₃ under Pressure.

ABSTRACT: Pressure-induced electronic structure transition from insulating phase to metal state is a potential new paradigm for halide perovskites. The metallization based on these materials may afford a novel motif toward realizing new electronic properties even superconductivity phenomenon. Herein, how static compression modulates the crystal and electronic structure of typical perovskite semiconductors cesium lead iodine (CsPbI₃) by both experimental and theoretical studies is reported. The comprehensive studies discover the insulator-metal transition of CsPbI₃ at 39.3 GPa, and reveal the key information behind the electronic transition. The perovskite's precise structural evolution is tracked upon compression, from orthorhombic Pnma phase to monoclinic C2/m st

SUBMITTER: Liang Y 

PROVIDER: S-EPMC6661939 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature