X射线激发Pr~(3+)掺杂(La,Y)PO_4的UVC发光及余辉特性
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  • 英文篇名:UVC Luminescence and Afterglow Properties of Pr~(3+) Doped (La,Y)PO_4 Excited by X-ray
  • 作者:胡悦 ; 李蕴乾 ; 袁鹏 ; 李天义 ; 杨艳民
  • 英文作者:Hu Yue;Li Yunqian;Yuan Peng;Li Tianyi;Yang Yanmin;College of Physics Science and Technology, Hebei University, Hebei Key Lab of Optic-electronic Information and Materials;
  • 关键词:LaPO4 ; YPO4 ; X射线 ; UVC ; 余辉
  • 英文关键词:LaPO_4;;YPO_4;;X-ray;;UVC;;afterglow
  • 中文刊名:XTXB
  • 英文刊名:Journal of the Chinese Society of Rare Earths
  • 机构:河北大学物理科学与技术学院河北省光电信息与材料重点实验室;
  • 出版日期:2018-12-21 10:37
  • 出版单位:中国稀土学报
  • 年:2019
  • 期:v.37;No.179
  • 基金:国家自然基金面上基金项目(A2015201192);; 教育厅重点基金项目(ZD2014096)资助
  • 语种:中文;
  • 页:XTXB201903005
  • 页数:5
  • CN:03
  • ISSN:11-2365/TG
  • 分类号:48-52
摘要
采用高温固相法成功合成了纯相的LaPO_4:Pr~(3+), YPO_4:Pr~(3+)以及YPO_4:Bi荧光粉,通过XRD对样品进行物相分析表明,磷酸镧为单斜相晶系,磷酸钇为四方晶系。分别探究了在X射线激发下的UVC发光性质以及在X射线激发后的UVC余辉性质,发现这3种荧光粉在X射线激发下都具有强烈的UVC发射,发现在X射线激发后YPO_4:Pr~(3+)和YPO_4:Bi荧光粉都具有UVC余辉发射,其中, YPO_4:Pr~(3+)荧光粉的UVC余辉可持续5 min以上,而YPO_4:Bi荧光粉的UVC余辉可持续1 h以上。单独对YPO_4:Pr~(3+)荧光粉进行了热释发光分析,并估算出其陷阱距离导带的位置,对其产生UVC余辉的机制进行了系统的描述和解释。
        The pure phase LaPO_4:Pr~(3+), YPO_4:Pr~(3+) and YPO_4:Bi phosphors were successfully synthesized through conventional solid state reaction. The characterization of the samples by XRD showed that LaPO_4 phosphor was monoclinic crystal system and YPO_4 phosphor was tetragonal. The UVC luminescence properties upon X-ray excitation and the UVC persistent luminescence properties after X-ray excitation were explored respectively. It was found that all three phosphors had strong UVC emission under X-ray excitation, and it was also found that both YPO_4:Pr~(3+) and YPO_4:Bi phosphors had UVC persistent luminescence after X-ray excitation, among which the UVC afterglow of YPO_4:Pr~(3+) phosphor could last for more than 5 min, while the UVC afterglow of YPO_4:Bi phosphor could last for more than 1 h. The thermoluminescence analysis of YPO_4:Pr~(3+) phosphor was carried out, and the position of the trap was estimated. The mechanism for generating UVC afterglow was systematically described and explained.
引文
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