Fig. 3: Characterizations of the large-area quasi-2D film.
From: High-performance large-area quasi-2D perovskite light-emitting diodes
a Digital photo of the resulting large-area quasi-2D perovskite film and the corresponding PLQY in select regions. b Statistical PLQY for the 25 pieces films, which originate from different regions of the large-area quasi-2D film. c AFM image and d GIWAXS pattern of the film at the edge-region. e J–V curves of the film at different regions, to extract the leakage current level under reverse bias. f Different region film’s SCLC curves and the corresponding defect densities.
