Ce3+-Doped Yttrium Aluminum Garnet Transparent Ceramics for High-Resolution X-Ray Imaging
Ce3+-Doped Yttrium Aluminum Garnet Transparent Ceramics for High-Resolution X-Ray Imaging
复制标题
用于高分辨率 X 射线成像的 Ce3 掺杂钇铝石榴石透明陶瓷
DOI：
10.1002/adom.202102056
复制
发表时间：
2022-01-30
影响因子：
9
通讯作者：
Xu, Xuhui
中科院分区：
文献类型：
--
作者：
Ji, Tao;Wang, Ting;Xu, Xuhui
闪烁体作为X射线成像的核心材料，在辐射探测、安检和生物医学应用中受到高度关注。然而，目前的单晶和薄膜X射线成像仪都存在成本高、稳定性不足、分布不均匀等问题，这无疑限制了高质量X射线成像的发展。采用真空固相反应烧结法制备了Y3 Al 5 O 12：Ce 3+（YAG：Ce 3+）透明陶瓷，其透射率高达82%，稳态光产额为24 600光子MeV-1。所制备的YAG：Ce 3 + TC表现出具有优异空间分辨率（约34.7 lp mm（-1））的X射线成像。此外，由于YAG：Ce 3 + TC的结构稳定性，成功地实现了在X射线照射下的长期稳定工作。这项工作表明，TC闪烁器为高质量X射线成像的发展提供了新的机会。
Scintillators, as the core materials for X-ray imaging, have received great attention in radiation detection, security inspection, and biomedical applications. However, the current single crystal and thin film scintillators have encountered several issues, such as high cost, insufficient stability, and uneven distribution, which undoubtedly limit the development of high-quality X-ray imaging. Herein, the Y3Al5O12:Ce3+ (YAG:Ce3+) transparent ceramics (TCs), which presented a high transmittance of 82% and a steady-state light yield of 24 600 photons MeV-1, are prepared by the vacuum solid-state reactive sintering method. The fabricated YAG:Ce3+ TCs exhibit X-ray imaging with an excellent spatial resolution (approximate to 34.7 lp mm(-1)). Moreover, because of the structural stability of YAG:Ce3+ TCs, long-term stable work under X-ray irradiation is realized successfully. This work indicates that the TC scintillators provide a new opportunity for the development of high-quality X-ray imaging.