2D and 3D double perovskite with dimensionality-dependent optoelectronic properties: first-principle study on Cs₂AgBiBr₆ and Cs₄AgBiBr₈

Recently, the effect of dimensional control on the optoelectronic performance of two-dimensional (2D)/three-dimensional (3D) single perovskites has been confirmed. However, how the dimensional change affects the photoelectric properties of 2D/3D all-inorganic double perovskites remains unclear. In this study, we present a detailed theoretical research on a comparison between the optoelectronic properties of 3D all-inorganic double perovskite...