Fig. 1From: High-Performance Quasi-Two-Dimensional CsPbBr2.1Cl0.9:PEABr Perovskite Sky-Blue LEDs with an Interface Modification Layer(a) Structure, (b) SEM image, and (c) electron level of the QTD CsPbBr2.1Cl0.9:PEA PeLEDBack to article page