Improving Performance of Quasi-2D Perovskite Light-Emitting Diodes by Solvent Atmospheric Post-Treatment.

ABSTRACT: Perovskite light-emitting diodes (PeLEDs) have achieved remarkable progress in recent years, with green-emitting PeLEDs now exhibiting external quantum efficiencies (EQEs) exceeding 30%, rivaling those of organic light-emitting diodes (OLEDs). While quasi-2D perovskite structures have emerged as a promising strategy for high-efficiency PeLEDs─owing to their enhanced exciton binding energies and charge carrier confinement─their phase distribution remains a critical yet challenging factor governing device performance. In this study, we demonstrate that the phase distribution in quasi-2D perovskite films is highly sensitive to the solvent atmosphere during annealing. Polar solvents (e.g., dimethylformamide, dimethyl sulfoxide) introduce nonradiative recombination centers and accelerate film d

SUBMITTER: Pang P 

PROVIDER: S-EPMC12291083 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature