Preparation and red long-afterglow luminescence of Y2O3:Eu, Dy

作者：Xie Wei, Yinhai Wang, Yihua Hu, Li Luo, Haoyi Wu, Deng Liu-Yong · 发表于：Acta Physica Sinica · 年份：2010 · DOI：10.7498/aps.59.3344 · 被引用次数：7 · 研究领域：Luminescence Properties of Advanced Materials

摘要 采用高温固相法合成发光样品Y2O3：Eu3+0.01和Y2O3：Eu3+0.01，Dy3+0.01.X射线衍射分析(XRD)表明样品保持Y2O3晶格结构，掺入的Eu3+和Dy3+对Y2 关键词: 长余辉 / Y2O3 / 稀土掺杂 / 陷阱 Abstract The rare-earth doped phosphors Y2O3：Eu3+0.01and Y2O3：Eu3+0.01, Dy3+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 Eu3+and Dy3+doping does not change the crystal sructure of Y2O3, the Eu3+and Dy3+ ions enter into the host crystal lattice . The emission spectra due to 5D0→7FJof Eu3+show that Eu3+is the only luminescence center. There is no glow peak from Dy3+. The decay characteristics of phosphors Y2O3：Eu3+0.01, Dy3+0.01 follows the Double exponential distribution. The measurement of thermoluminescence reveals that the trap is generated by Eu3+. The Dy3+doping doesn’t change the trap depth, and helps the electrons escape from the trap, which induces long-afterglow luminescence. Keywords: long afterglow / Y2O3 / rare-earth doped / traps 作者及机构信息 谢伟, 王银海, 胡义华, 罗莉, 吴浩怡, 邓柳咏 1. 广东工业大学物理与光电工程学院,广州 510006 基金项目: 国家自然科学基金(批准号：20671022, 20871033,10774031 )资助的课题. Authors and contacts Xie Wei, Wang Yin-Hai, Hu Yi-Hua, Luo Li, Wu Hao-Yi, Deng Liu-Yong 1. 广东工业大学物理与光电工程学院,广州 510006 参考文献 [1] ［1］Yang Z P, Liu Y F 2006 Acta Phys.Sin.55 4946 (in Chinese) ［杨志平、 刘玉峰 2006 物理学报 55 4946］ [2] ［2］Liao Q R, Zhuang WD, Xia T, Liu R H, Hu Y S, Tng X M, Liu Y H 2009 Acta Phys.Sin.58 2776 (in Chinese) ［廖秋荣、 庄卫东、 夏天、 刘荣辉、 胡运生、 滕晓明、 刘元红 2009 物理学报 58 2776］ [3] ［3］ Setlur A...