1. High-stability double perovskite scintillator for flexible X-ray imaging.
- Author
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Li, Jingyu, Hu, Qingsong, Xiao, Jiawen, and Yan, Zheng-Guang
- Subjects
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X-ray imaging , *SCINTILLATORS , *PEROVSKITE , *SPATIAL ability , *METAL halides , *SPATIAL resolution - Abstract
The layered double perovskite microcrystals show excellent stability both under ambient condition and under X-ray irradiation, their luminescent properties and applications in X-ray imaging have been demonstrated. [Display omitted] Metal halide perovskites, as a new class of attractive and potential scintillators, are highly promising in X-ray imaging. However, their application is limited by the sensitivity to moisture and irradiation. To address this issue, we reported a 2D layered double perovskite material Cs 4 Cd 1-x Mn x Bi 2 Cl 12 that exhibits high stability both under ambient condition and under X-ray irradiation. Cs 4 Cd 1-x Mn x Bi 2 Cl 12 demonstrates superior scintillation performance, including excellent X-ray response linearity and a high light yield (∼34,450 photons/MeV). More importantly, the X-ray excited emission intensity maintains 92% and 94% of its original value after stored at ambient condition for over two years and after X-ray irradiation with a total dose of 11.4 Gy, respectively. By mixing with PDMS (polydimethylsiloxane), we have successfully produced a high-quality flexible film that can be bent freely while maintaining its excellent scintillation properties. The scintillating screen exhibits outstanding imaging ability with a spatial resolution of up to 16.7 line pairs per millimeter (lp/mm), also, the superiority of this scintillation screen in flexible X-ray imaging is demonstrated. These results indicate the huge potential of this high-stability double perovskite scintillator in X-ray imaging. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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