Jindou Shi, Zeyu Wang, Luxia Xu, Junnan Wang, Zheyuan Da, Chen Zhang, Yongqiang Ji, Qing Yao, Youlong Xu, Nikolai V. Gaponenko, Jinshou Tian, Minqiang Wang
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引用次数: 0
Abstract
Pb-free double-perovskite (DP) scintillators are highly promising candidates for X-ray imaging because of their superior optoelectronic properties, low toxicity, and high stability. However, practical applications require Pb-free DP crystals to be ground and mixed with polymers to produce scintillator films. Grinding can compromise film uniformity and optical properties, thereby affecting imaging resolution. In this study, an in situ fabrication strategy is proposed to facilitate the crystalline growth of Pb-free Cs2AgInxBi1-xCl6 micron sheets in polymethyl methacrylate in a single step. By adjusting the In3+/Bi3+ ratio, Cs2AgIn0.9Bi0.1Cl6/PMMA composite films (CFs) with excellent scintillation properties are obtained, including a light yield of up to 32000 photons per MeV and an X-ray detection limit of 87 nGyairs−1. This strategy also enabled the production of large Cs2AgIn0.9Bi0.1Cl6/PMMA CFs, which demonstrated favorable flexibility and stability, fabricating products with advanced eligibility for commercial applications. The CFs exhibited outstanding performances in X-ray imaging, producing high-resolution structures and providing a new avenue for the development of Pb-free DP materials in fields such as medical imaging and safety detection.
期刊介绍:
Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.