Fig. 1: Optical properties of CsPbBr3 NPLs.
From: Efficient deep-blue LEDs based on colloidal CsPbBr3 nanoplatelets meeting the Rec.2020 standard
a Schematic illustration of the HBr-assisted removal of loosely bound long-chain ligands and incomplete octahedral structures, followed by efficient surface vacancy passivation using novel short-chain S-TBP ligands. UV-vis absorption and PL spectra of b control, c etched, and d target NPLs. e Statistical distribution of PL QYs measured across 30 independent synthetic batches for control, etched, and target NPLs. f CIE 1931 chromaticity coordinates of control and target CsPbBr3 NPL colloidal solutions. g Long-term stability of the CIE-y coordinate for control and target NPL colloidal solutions under ambient conditions
