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Updated: May 21, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Composition Modulation of Cs2ZrCl6-based Scintillator Film via Vapor Deposition for Large-Area X-Ray Imaging
Hao Wang1, Shuai Zhang1, Zhiguo Xia1
1State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, Guangdong Engineering Technology Research and Development Centre of Special Optical Fiber Materials and Devices, School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510641, China.
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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