Ligand Engineering Achieves Suppression of Temperature Quenching in Pure Green Perovskite Nanocrystals for Efficient and Thermostable Electroluminescence.

ABSTRACT: Formamidinium lead bromide (FAPbBr₃) perovskite nanocrystals (NCs) are promising for display and lighting due to their ultra-pure green emission. However, the thermal quenching will exacerbate their performance degradation in practical applications, which is a common issue for halide perovskites. Here, we reported the heat-resistant FAPbBr₃ NCs prepared by a ligand-engineered room-temperature synthesis strategy. An aromatic amine, specifically β-phenylethylamine (PEA) or 3-fluorophenylethylamine (3-F-PEA), was incoporated as the short-chain ligand to expedite the crystallization rate and control the size distribution of FAPbBr₃ NCs. Employing this ligand engineering approach, we synthesized high quality FAPbBr₃ NCs with uniform grain size and red

SUBMITTER: Chen K 

PROVIDER: S-EPMC11602897 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature