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- Title
Ultrastable and flexible glass−ceramic scintillation films with reduced light scattering for efficient X−ray imaging.
- Authors
Li, Ruizi; Zhu, Weiguo; Wang, Haoyang; Jiao, Yitong; Gao, Yuan; Gao, Ruikun; Wang, Riheng; Chao, Hongxiao; Yu, Aimin; Liu, Xiaowang
- Abstract
The thickness of the scintillation films in indirect X−ray detectors can significantly influence their luminescence intensity. However, due to the scattering and attenuation of incoherent photons, thick scintillation films tend to reduce light yield. Herein, a highly transparent perovskite glass−ceramic scintillation film, in which the CsPbBr3 nanocrystals are in-situ grown inside a transparent amorphous polymer structure, is designed to achieve ultrastable and efficient X-ray imaging. The crystal coordination−topology growth and in−situ film formation strategy is proposed to control the crystal growth and film thickness, which can prevent light scattering and non−uniform distribution of CsPbBr3 nanocrystals while providing sufficient film thickness to absorb X−ray, thus enabling a high−quality glass−ceramic scintillator without agglomeration and Ostwald ripening. This glass−ceramic scintillation film with a thickness of 250 μm achieves a low detection limit of 326 nGyair s−1 and a high spatial resolution of 13.9 lp mm−1. More importantly, it displays remarkable scintillation stability under X−ray irradiation (radiation intensity can still reach 95% at 278 μGyair s−1 for 3600 s), water soaking (150 days), and high−temperature storage (150 days at 60 °C). Hence, this work presents a approach to construct ultrastable and flexible scintillation films for X−ray imaging with reduced light scattering and improved resolution.
- Subjects
X-ray imaging; SCINTILLATORS; X-ray scattering; RADIOGRAPHIC films; OSTWALD ripening; LIGHT scattering; CRYSTAL growth
- Publication
NPJ Flexible Electronics, 2024, Vol 8, Issue 1, p1
- ISSN
2397-4621
- Publication type
Article
- DOI
10.1038/s41528-024-00319-x