Spectrally Stable Blue Light-Emitting Diodes Based on All-Inorganic Halide Perovskite Films.

ABSTRACT: Substantial progress has been made in perovskite light-emitting diodes (PeLEDs), but the fabrication of high-performance blue PeLEDs still remains a challenge due to its low efficiency, spectral instability and short operational lifetime. How to produce an efficient and stable blue PeLED is the key to realizing the application of PeLEDs in full-color displays. We herein report a blue PeLED usint the ligand-assisted reprecipitation method, in which phenylethylammonium bromide (PEABr) was used as ligands, and chloroform was used as anti-solvent to prepare blue perovskite nanocrystal films. By increasing the PEABr content from 40% to 100% (The ratio of x% PEABr refers to the molar ratio between PEABr and PbBr₂), the film quality is highly improved, and the emission exhibits a blue

SUBMITTER: Zhang H 

PROVIDER: S-EPMC9457983 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature