Fig. 5From: High-Performance Quasi-2D Perovskite Light-Emitting Diodes Via Poly(vinylpyrrolidone) Treatmenta PL spectra of quasi-2D perovskite films with different PVP concentrations; the inset shows the image of quasi-2D perovskite films under a 365-nm wavelength ultraviolet lamp. b Time-resolved photoluminescence lifetime of quasi-2D perovskite films with different PVP concentrationsBack to article page