Oleylammonium fluoride passivated blue-emitting 2D CsPbBr₃ nanoplates with near-unity photoluminescence quantum yield: safeguarding against threats from external perturbations.

ABSTRACT: Quantum-confined, two-dimensional (2D) CsPbBr₃ (CPB) nanoplates (NPLs) have emerged as exceptional candidates for next-generation blue LEDs and display technology applications. However, their large surface-to-volume ratio and detrimental bromide vacancies adversely affect their photoluminescence quantum yield (PLQY). Additionally, external perturbations such as heat, light exposure, moisture, oxygen, and solvent polarity accelerate their transformation into three-dimensional (3D), green-emitting CPB nanocrystals (NCs), thereby resulting in the loss of their quantum confinement. Until now, no reported strategies have successfully addressed all these issues simultaneously. In this study, for the first time, we prepared oleylammonium fluoride (OAmF) salt and applied it post-synthet

SUBMITTER: Sen A 

PROVIDER: S-EPMC11610764 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature