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Pr3+、Ce3+共掺LiYSiO4闪烁体的发光性能
作者:张鹏 杜飞 栗茹 潘尚可 潘建国 陈红兵 
单位:宁波大学材料科学与化学工程学院 浙江省光电探测材料及器件重点实验室 浙江 宁波 315211 
关键词:闪烁体 镨铈共掺 发光性能 衰减时间 
分类号:TQ174.75
出版年,卷(期):页码:2018,46(4):0-0
DOI:
摘要:
采用固相合成法制备了LiY0.99?xCe0.01PrxSiO4(x=0~5%)系列化合物,采用X射线粉末衍射、紫外?可见漫反射光谱、光致发光光谱、X射线激发发射光谱以及光致发光衰减曲线对其系列化合物的物相、发光性能进行了表征。结果表明:在煅烧温度为1 100 ℃所制备的样品均为纯LiYSiO4相;Ce3+的吸收峰位于325和364 nm。Pr3+、Ce3+共掺时,由于Pr3+-Ce3+之间的能量传递作用,在250 nm波长的紫外光激发下,在400 nm处产生了Ce3+的特征发射峰。随着Pr3+掺杂量的增加,Ce3+在X射线激发下的发光强度逐渐下降,但Ce3+在320 nm的波长激发下的衰减逐渐变快。
 
基金项目:
国家自然科学基金面上项目(11475242,51272263);宁波大学王宽诚基金。
作者简介:
张 鹏(1991—),男,硕士研究生。
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