Mixed-halide copper-based perovskite R₂Cu(Cl/Br)₄ with different organic cations for reversible thermochromism

Abstract

Two-dimensional (2D) hybrid perovskites have shown multifeatures owing to their multiple quantum wells structure. Here, we show the synthesis and characterization of 2D mixed-halide Cu-based perovskite crystals, R2Cu(Cl/Br)4, with three...

Tunable Optical Properties of Two-Dimensional Copper-Based Halide Perovskites with Mixed Organic Cations

“…Generally, the inorganic network is viewed as the major contribution to most properties of materials, while various organic cations could result in completely different properties as well . It was demonstrated that designing an organic cation is an effective way to endow the 2D perovskites with different properties. , So far, various single-cation copper-based perovskites (such as methyl, butyl, and hexyl ammonium cations) with different chemical compositions (e.g., ratios of halogen elements) and crystal structures (monoclinic, orthorhombic, hexagonal, etc. ) , have been reported.…”

“…16 It was demonstrated that designing an organic cation is an effective way to endow the 2D perovskites with different properties. 5,17 So far, various single-cation copper-based perovskites (such as methyl, butyl, and hexyl ammonium cations) 18 with different chemical compositions (e.g., ratios of halogen elements) 19 and crystal structures (monoclinic, orthorhombic, hexagonal, etc.) 13,20 have been reported.…”