Composition Modulation of Cs2ZrCl6-based Scintillator Film via Vapor Deposition for Large-Area X-Ray Imaging.

IF 10.7 2区 材料科学 Q1 CHEMISTRY, PHYSICAL
Hao Wang, Shuai Zhang, Zhiguo Xia
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引用次数: 0

Abstract

Metal halide scintillators for X-ray imaging have shown remarkable potential, however, achieving large-area film has been hindered by challenges in materials design and fabrication methods, particularly regarding composition uniformity for high-resolution imaging applications. Here, a multi-source vapor deposition (MSVD) method is employed to realize the facile composition modulation by designing MA+ and Br- (MA+ = methylammonium) co-doped Cs2ZrCl6 (MCZCB) and further synthesizing a uniform and large-area scintillator film. The incorporation of MA+ and Br- ions, with their slightly larger ionic radius, induces lattice distortion, enhancing the self-trapped excitons (STEs) luminescence of the MCZCB and significantly boosting the photoluminescence quantum yield (PLQY) from 70% in pristine Cs2ZrCl6 (CZC) to an impressive 95%. Finally, a large-area of 100 cm2 and 95% visible light transparent scintillator film is fabricated, achieving a spatial resolution of 25.1 lp mm-1. This result demonstrates that MSVD technology is promising as a practical strategy for fabricating large-area X-ray imaging film.

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来源期刊
Small Methods
Small Methods Materials Science-General Materials Science
CiteScore
17.40
自引率
1.60%
发文量
347
期刊介绍: Small Methods is a multidisciplinary journal that publishes groundbreaking research on methods relevant to nano- and microscale research. It welcomes contributions from the fields of materials science, biomedical science, chemistry, and physics, showcasing the latest advancements in experimental techniques. With a notable 2022 Impact Factor of 12.4 (Journal Citation Reports, Clarivate Analytics, 2023), Small Methods is recognized for its significant impact on the scientific community. The online ISSN for Small Methods is 2366-9608.
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