Excellent irradiation stability of Ce3+-doped Na5Lu9-Gd F32 glass-ceramics scintillator for X-ray imaging
Excellent irradiation stability of Ce3+-doped Na5Lu9-Gd F32 glass-ceramics scintillator for X-ray imaging
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DOI：
10.1016/j.jeurceramsoc.2023.11.010
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发表时间：
2023-11
影响因子：
5.7
通讯作者：
Rongfei Wei;P. Dai;Xiangling Tian;Ligan Ma;Qingqing Yu;Fangfang Hu;Liping Chen;Hai Guo
中科院分区：
文献类型：
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作者：
Rongfei Wei;P. Dai;Xiangling Tian;Ligan Ma;Qingqing Yu;Fangfang Hu;Liping Chen;Hai Guo
闪烁体由于具有将高能电离辐射转化为可见光的特殊能力，是X射线照相的核心组成部分。然而，传统的单晶闪烁体已不能满足现代社会和科学的需求。因此，开发新型闪烁体材料迫在眉睫。本文以一种实用、低成本的方法制备了一系列Na5Lu9-xGdxF32：Ce3+微晶玻璃(GCs)闪烁体。由于Al粉和Gd3+的适当引入，以及热处理后Na5Lu9-xGdxF32纳米晶(NCS)的晶化，样品的紫外和X射线激发发光显著增强。具有代表性的样品的X射线激发发光积分强度可达Bi4Ge3O12的128%。更重要的是，样品具有优异的辐射稳定性，即使暴露在高能X射线辐射下也几乎不会损坏。最后，基于所得到的样品实现了满意的X射线成像。空间分辨率高达14lp mm−-1，超过了许多新型钙钛矿型闪烁体。因此，这项研究促进了低成本、稳定和高性能Ce3+激活的GCs闪烁体的发展。
Scintillators, owing to their exceptional ability to convert high-energy ionizing radiation into visible light, are the core component of X-ray radiography. However, conventional single-crystal scintillators are inadequate to satisfy the modern social and scientific demands. So, the development of novel scintillator materials is imminent. Herein, a series of Na5Lu9-xGdxF32:Ce3+glass-ceramics (GCs) scintillators were elaborated by an exercisable and low-cost method. Benefiting from the proper introduction of Al powder and Gd3+, as well as the crystallization of Na5Lu9-xGdxF32nanocrystal (NCs) after heat treatment, luminescence excited by ultraviolet and X-ray of the sample is enhanced significantly. The integrated X-ray excited luminescence intensity of the representative sample can reach up to 128% of that of Bi4Ge3O12. More importantly, the sample has excellent irradiation stability that is almost undamaged even exposed to high-energy X-ray radiation. Finally, satisfactory X-ray imaging based on the resultant sample was realized. The spatial resolution is as high as 14 lp mm−1, which exceeds that of many novel perovskite scintillators. Thus, this investigation promotes the development of low-cost, stable and high-performing Ce3+-activated GCs scintillators.