Fig. 4From: High-Performance Quasi-Two-Dimensional CsPbBr2.1Cl0.9:PEABr Perovskite Sky-Blue LEDs with an Interface Modification LayerTop-view SEM images of the QTD CsPbBr2.1Cl0.9:PEABr films with varying proportions of PEABr (60%, 80%, and 100%)Back to article page