Ultrahigh Spatial Resolution, Fast Decay, and Stable X-Ray Scintillation Screen through Assembling CsPbBr3 Nanocrystals Arrays in Anodized Aluminum Oxide

A scintillation screen with ultrahigh spatial resolution, fast decay time, and high stability is the key to commercial application. Herein, a pixelated-structure scintillation screen of CsPbBr 3 nanocrystal arrays based on anodized aluminum oxide (AAO) is reported, and its scintillation properties for X-ray imaging are explored. It is of note that ultrahigh spatial resolution (2 µm), fast photoluminescence decay time (9 ns), and high stability (>42 d) are successfully achieved by the pixelated CsPbBr 3 -AAO arrays scintillation screen. Considering the decent scintillation properties and high stability, one has reason to assume that the pixelated CsPbBr 3 -AAO arrays scintillation screen may find an application as a new X-ray scintillation screen.