氧化镥中杂质对铈掺杂硅酸镥多晶粉体光谱性质影响  

Influence of Impurity in Lu_2O_3on Spectral Properties of Lu_2Si O_5∶Ce Polycrystalline Powders

作　　者：邓岳锋[1,2] 宋艳华 陈继[1] 刘川楹[1,2] 李德谦 刘郁[1] 李海连[1] DENG Yuefeng;SONG Yanhua;CHEN Ji;LIU Chuanying;LI Deqian;LIU Yu;LI Hailian(State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Acdemyof Sciences,Changchun 130022,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院长春应用化学研究所,稀土资源利用国家重点实验室,长春130022 [2]中国科学院大学,北京100049

出　　处：《应用化学》2018年第4期457-461,共5页Chinese Journal of Applied Chemistry

基　　金：中国科学院科技服务网络计划(STS计划)区域重点项目资助

摘　　要：氧化镥中杂质元素对其分离制备工艺、生产成本及镥基硅酸盐闪烁晶体的性能有很大影响,但杂质元素对晶体的性质影响研究较为有限,有待进一步完善。本文采用高温固相法制备了Lu_2O_3分离过程中关键杂质元素Yb^(3+)和Ca^(2+)共掺杂Lu_2Si O_5∶Ce多晶粉体,研究了Yb^(3+)或Ca^(2+)含量对多晶粉体光谱性质的影响,结果表明:Yb^(3+)或Ca^(2+)共掺并未改变发射光谱的形状和位置,随着杂质元素摩尔分数的增加,光谱强度和荧光寿命逐渐降低。The impurity elements in lutetium oxide have a great influence on the separation and preparation process,production cost and performance of lutetium based silicate scintillating crystals.The research about the effect of impurities on the crystal properties is limited and needs to be further improved.In this paper,the impurity elements(Yb3+and Ca2+are the key impure elements in Lu 2O3 separation process)co-doped Lu2SiO5∶Ce polycrystalline powders were prepared by the solid-state method.The effects of Yb3+or Ca2+content on the spectral properties of polycrystalline powders were studied.The results show that co-doping of Yb 3+or Ca 2+does not change the shape and position of the emission spectra.With the increase of the amount of doping impurities,the spectral intensity and fluorescence lifetime decrease gradually.

关 键 词：氧化镥 掺铈硅酸镥 杂质元素 多晶粉体 光谱性质 

分 类 号：O616[理学—无机化学]