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Y2O3：Eu,Dy的制备与红色长余辉发光性能研究
  • ISSN号：1000-3290
  • 期刊名称：《物理学报》
  • 时间：0
  • 分类：TN104.3[电子电信—物理电子学]
  • 作者机构：[1]广东工业大学物理与光电工程学院,广州510006
  • 相关基金：国家自然科学基金（批准号：20671022 20871033 10774031）资助的课题
作者： 谢伟[1], 王银海[1], 胡义华[1], 罗莉[1], 吴浩怡[1], 邓柳咏[1]
关键词： 长余辉, Y2O3, 稀土掺杂, 陷阱, long afterglow, Y2O3, rare-earth doped, traps
中文摘要：

采用高温固相法合成发光样品Y2O3：Eu^3＋0.01和Y2O3：Eu^3＋0.01,Dy^3＋0.01.X射线衍射分析（XRD）表明样品保持Y2O3晶格结构,掺入的Eu^3＋和Dy^3＋对Y2O3基质晶体结构没有明显影响.样品光致发光均以Eu^3＋离子为发光中心,由Eu^3＋离子电子的4f能级跃迁所致,未见Dy^3＋离子发光峰.样品Y2O3：Eu^3＋0.01,Dy^3＋0.01具有长余辉特性,余辉衰减符合双指数衰减规律.热释光谱分析表明Y2O3：Eu^3＋0.01中存在陷阱能级,但其没有余辉,即存在陷阱能级的样品不一定就会长余辉发光.样品Y2O3：Eu^3＋0.01,Dy^3＋0.01中存在与Y2O3：Eu^3.0.01相似的陷阱能级,说明Dy^3＋的掺入没有改变Eu^3＋陷阱能级,但有利于陷阱中电子的逃逸,从而产生长余辉发光.

英文摘要：

The rare-earth doped phosphors Y2O3：Eu^3＋0.01 and Y2O3：Eu^3＋0.01,Dy^3＋0.01 were synthesized by a high temperature solid-state reaction method. The phase structures of the phosphors were characterized by X-ray diffraction. The Eu^3 ＋ and Dy^3 ＋ doping does not change the crystal sructure of Y2O3,the Eu^3 ＋ and Dy^3 ＋ ions enter into the host crystal lattice. The emission spectra due to ^5D0 →^7FJ of Eu^3 ＋ show that Eu^3 ＋ is the only luminescence center. There is no glow peak from Dy^3 ＋. The decay characteristics of phosphors Y2O3：Eu^3＋0.01,Dy^3＋0.01 follows the Double exponential distribution. The measurement of thermoluminescence reveals that the trap is generated by Eu^3 ＋. The Dy^3 ＋ doping doesn＇t change the trap depth,and helps the electrons escape from the trap,which induces long-afterglow luminescence.

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期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876