Development of the ZnO:Ga microrods - epoxy composite as a scintillation screen for ultrafast X-ray detection
Development of the ZnO:Ga microrods - epoxy composite as a scintillation screen for ultrafast X-ray detection
复制标题
开发 ZnO:Ga 微棒 - 环氧复合材料作为超快 X 射线检测的闪烁屏
DOI：
10.1016/j.optmat.2020.109805
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发表时间：
2020
影响因子：
3.9
通讯作者：
Jingtai Zhao
中科院分区：
文献类型：
--
作者：
Qianli Li;Daolong Yang;Shutong Hao;Ran An;Rui Yuan;Yunling Yang;Xunchun Yang;Meng Huang;Zhijun Zhang;Xiaolin Liu;Jingtai Zhao
为了满足现有和即将到来的高能物理实验设备对超快和硬x射线检测和成像的要求，采用水热聚合法制备了ZnO:Ga微棒-环氧树脂（ZnO:Ga- ep）复合材料。在x射线激发下，ZnO:Ga-EP复合材料在390 nm处表现出窄而强的近带边发射。更重要的是，近带边发射的衰减时间可达亚纳秒（<1 ns），这对超快x射线探测和成像具有重要意义。此外，ZnO:Ga- ep复合材料中存在从环氧树脂基体到ZnO:Ga微棒的能量传递。综上所述，ZnO:Ga-EP复合材料可以作为一种潜在的超快x射线闪烁屏应用于超快和硬x射线探测器。
In order to satisfy the requirements of ultrafast and hard X-ray detection and imaging in the existing and upcoming experimental facilities for high energy physics, the ZnO:Ga microrods - epoxy (ZnO:Ga-EP) composite were successfully synthesized by the hydrothermal and polymerization method. Under X-ray excitation, the ZnO:Ga-EP composite exhibits a narrow and intense near-band-edge emission located at 390 nm. More importantly, the decay time of the near-band-edge emission can reach up to subnanosecond (<1 ns), which is extremely significant for ultrafast X-ray detection and imaging. In addition, there exist an energy transfer from the epoxy host to the ZnO:Ga microrods in the ZnO:Ga-EP composite. In conclusion, this work indicates the ZnO:Ga-EP composite can be used as a potential ultrafast X-ray scintillation screen for applications in ultrafast and hard X-ray detectors.