Halide perovskites have unusually soft lattices with bulk moduli that are an order of magnitude lower than those of their oxide counterparts. Furthermore, halide perovskites remain crystalline under GPa-scale pressures, allowing us to study their structural evolution with compression using atomic coordinates obtained from both powder and single-crystal diffraction data. I will present a series of studies on both 2D and 3D halide perovskites that allow us to understand how to use lattice compression to access new material properties. The topics I will cover include: pressure-induced changes to color, magnetism, conductivity, and excited-state ion migration. I will present both experimental investigations and theoretical studies that allow us to better understand the changes to electronic structure, particularly at very high pressures where diffraction data are not available.

Halide perovskites under pressure

ACS Spring Meeting 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.