Synthesis of CsPbBr3 and CsPbBrXI(3−X) Films by Spray-Coating Technique

Abstract

Inorganic CsPbBr3 and CsPbBrxI(3−x) films were prepared by spray-coating on the glass. The crystalline structure and optical properties were investigated for these perovskites films. The results show that the samples at 180 °C have pure monoclinic perovskite phase and exhibit strong single photoluminescence (PL). The surface morphology and optical features of the perovskites films could be remarkably changed by doping different halogen ions. A white light-emitting diode (WLED) was assembled based on the obtained CsPbBr3 films, and the CIE color of WLED is (0.33, 0.34), showing the application potentiality of the perovskites films synthesized by spray-coating in light-emitting and display devices.