Ultrahigh Spatial Resolution, Fast Decay, and Stable X‐Ray Scintillation Screen through Assembling CsPbBr3 Nanocrystals Arrays in Anodized Aluminum Oxide. Issue 24 (15th October 2021)

• Record Type: Journal Article
• Authors: Li, Huihui; Yang, Heng; Yuan, Rui; Sun, Zhixiang; Yang, Yunling; Zhao, Jingtai; Li, Qianli; Zhang, Zhijun
• Is Part Of: Advanced optical materials. Volume 9:Issue 24(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-10-15
• Subjects: CsPbBr 3 nanocrystals -- fast decay time -- scintillators -- ultrahigh spatial resolution -- X‐ray imaging; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202101297
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: 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 CsPbBr3 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 CsPbBr3 ‐AAO arrays scintillation screen. Considering the decent scintillation properties and high stability, one has reason to assume that the pixelated CsPbBr3 ‐AAO arrays scintillation screen may find an application as a new X‐ray scintillation screen. Abstract : Pixelated‐structure perovskite nanocrystal arrays scintillation screen (CsPbBr3 arrays on anodized aluminum oxide) achieves a record spatial resolution value of 2 µm. The suppression of the lateral propagation of scintillation light allows both high spatial resolution and the thickening of the scintillation screen to ensure the absorption of X‐rays, reduce the dose, and satisfy high‐energy X‐ray detection.