Reversible multicolor chromism in layered formamidinium metal halide perovskites.

ABSTRACT: Metal halide perovskites feature crystalline-like electronic band structures and liquid-like physical properties. The crystal-liquid duality enables optoelectronic devices with unprecedented performance and a unique opportunity to chemically manipulate the structure with low energy input. In this work, we leverage the low formation energy of metal halide perovskites to demonstrate multicolor reversible chromism. We synthesized layered Ruddlesden-Popper FA_n+1Pb_nX_3n+1 (FA = formamidinium, X = I, Br; n = number of layers = 1, 2, 3 … ∞) and reversibly tune the dimensionality (n) by modulating the strength and number of H-bonds in the system. H-bonding was controlled by exposure to solvent vapor (solvatochromism) or temperature change (thermochromism), which shu

SUBMITTER: Rosales BA 

PROVIDER: S-EPMC7568568 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature