High pressure, as an extreme condition, can effectively change the interaction between atoms inside a material, forcing the electronic structure and optical properties to change. Studying the optical and ultrafast dynamical properties of materials under pressure is helpful to understand the relationship between the structure and properties of materials.
Click here for original story, Luminescence mechanism of lead-free double perovskite Cs2NaBiCl6 crystal under high pressure
Source: Phys.org