Inorganic CsPbBr₃ and CsPbBr_xI_(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.

通过在玻璃上喷涂制备无机 CsPbBr ₃和 CsPbBr _x I _(3-x)膜。研究了这些钙钛矿薄膜的晶体结构和光学性能。结果表明，在 180 C 下的样品具有纯单斜钙钛矿相并表现出强烈的单光致发光 (PL)。通过掺杂不同的卤素离子，可以显着改变钙钛矿薄膜的表面形貌和光学特征。基于获得的CsPbBr ₃薄膜组装了一个白色发光二极管（WLED），WLED的CIE色度为（0.33, 0.34），显示了通过喷涂合成的钙钛矿薄膜在发光和发光方面的应用潜力。显示设备。