High-Brightness Delayed Imaging Realized by Embedding Zinc Gallate Nanocrystals Into Glass

en This link goes to a English section zh This link goes to a Chinese section X-ray delayed imaging technology leverages an “irradiation-storage-thermally stimulated readout” mode, demonstrating unique advantages in intermittent monitoring scenarios such as high-temperature/high-radiation environments. This typically requires materials combining abundant carrier-trapping energy levels with structural thermostability. Herein, Cr 3+ -doped ZnGa 2 O 4 glass ceramics (ZGC GCs) serve as a functional platform, utilizing their deep trap energy levels (main peak 197.7°C) to efficiently capture and store X-ray imaging information, and achieve high-brightness X-ray delayed imaging by modulating the thermally stimulated detrapping rates. Under its exceptional structural thermostability and deep trap characteristics, ZGC GCs maintain high-quality delayed imaging capability by thermal stimulation even after 180°C irradiation, highlighting their potential for high-temperature nondestructive testing and surpassing the high-temperature failure threshold of conventional scintillators. This work pioneers functional applications of glass ceramics in high-temperature irradiation scenarios and offers a novel perspective for selecting harsh-environment-adapted X-ray imaging materials. 摘要 en This link goes to a English section zh This link goes to a Chinese section X射线延迟成像技术通过“辐照-存储-热激励读取”模式, 在间歇性监控场景(如高温/高辐射环境)中展现独特优势, 而热激励读取过程往往需要材料具备优异的结构热稳定性。本文以Cr 3+ 掺杂ZnGa 2 O 4 透明玻璃陶瓷(ZGC GCs)为载体, 利用其深陷阱能级(主峰197.7°C)高效捕获并存储X射线成像信息, 通过调节热激励脱陷速率实现高亮度X射线延迟成像。基于其优异的结构热稳定性及较深的陷阱能级, 在180°C高温环境下辐照后, ZGC GCs仍可通过热激励实现高质量延迟成像, 凸显其在高温无损检测领域的突出潜力, 突破传统闪烁体高温失效瓶颈。我们的工作为透明玻璃陶瓷的高温辐照功能应用开创了新方向, 并为恶劣环境适用型X射线成像材料的选择提供了新视角。