Tb^(3+)掺杂透明锗酸盐微晶玻璃:制备与面向X射线探测的增强发光  

Tb^(3+) Doped Transparent Germanate Glass Ceramics:Preparation and Enhanced Luminescence for X-ray Detection

作　　者：陈宇暄 黄立辉 赵静涛 赵士龙[2,3] 徐时清 CHEN Yu-xuan;HUANG Li-hui;ZHAO Jing-tao;ZHAO Shi-long;XU Shi-qing(College of Materials and Chemistry,China Jiliang University,Hangzhou 310018,China;Institute of Optoelectronic Materials and Devices,China Jiliang University,Hangzhou 310018,China;College of Optical and Electronic Technology,China Jiliang University,Hangzhou 310018,China;Laboratory of Glasses and Ceramics,Univ Rennes,CNRS,ISCR(Institut des Sciences Chimiques de Rennes)UMR CNRS 6226,University of Rennes 1,Rennes 35042,France)

机构地区：[1]中国计量大学材料与化学学院,浙江杭州310018 [2]中国计量大学光电材料与器件研究院,浙江杭州310018 [3]中国计量大学光学与电子科技学院,浙江杭州310018 [4]Laboratory of Glasses and Ceramics,Univ Rennes,CNRS,ISCR(Institut des Sciences Chimiques de Rennes)UMR CNRS 6226,University of Rennes 1,Rennes 35042,France

出　　处：《发光学报》2021年第6期804-809,共6页Chinese Journal of Luminescence

基　　金：浙江省自然科学基金(LY19E020004)资助项目。

摘　　要：通过熔融淬火和后续热处理,成功制备了Tb^(3+)掺杂含LaF_(3)纳米晶透明锗酸盐微晶玻璃。详细研究了所制备的玻璃和微晶玻璃的发光性质。X射线衍射结果表明,玻璃基体中析出的晶相为纯LaF_(3)晶体,晶粒尺寸在16~21 nm之间。在377 nm紫外光和X射线激发下,Tb^(3+)掺杂含LaF_(3)纳米晶的微晶玻璃比Tb^(3+)掺杂的锗酸盐玻璃表现出更强的绿光发射,且绿光发射强度随热处理温度升高和时间的延长而增强。微晶玻璃在X射线激发下的最大积分发光强度约为商用闪烁晶体Bi_(4)Ge_(3)O_(12)的40.3%。本研究表明,掺Tb^(3+)含LaF_(3)纳米晶锗酸盐微晶玻璃在X射线探测中具有潜在的应用前景。Tb^(3+) doped transparent germanate glass ceramics embedded with LaF_(3) nanocrystals were successfully prepared via melt-quenching and subsequent thermal treatment.The luminescent properties of the as-prepared glass and the glass ceramics were investigated in detail.The X-ray diffraction results prove that the crystalline phase precipitated in the glass matrix was pure LaF_(3) crystal and the crystal size was between 16 nm and 21 nm.Under the excitation of 377 nm ultraviolet light and X-ray,Tb^(3+) glass ceramics embedded with LaF_(3) nanocrystals show much intense green emission than Tb^(3+) doped germanate glass,and the green emission intensity increases with the increment of thermal treatment temperature and time.The maximum integrated X-ray excited luminescence intensity of the glass ceramics is about 40.3%of that of Bi_(4)Ge_(3)O_(12) crystal which is the commercial scintillating crystal.Our research shows that Tb^(3+)doped germanate glass ceramics embedded with LaF_(3) nanocrystals have potential application prospects in X-ray detection.

关 键 词：发光 Tb^(3+) 锗酸盐玻璃 微晶玻璃 玻璃闪烁体 

分 类 号：O482.31[理学—固体物理]