高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (8): 1022.

• 论文 • 上一篇    下一篇

在La2Na2Sr6(PO4)6Br2基质中Tb3+的发光及Ce3+对Tb<3+的敏化

宋家庆, 黄竹坡   

  1. 北京大学化学系, 北京, 100871
  • 收稿日期:1991-09-21 出版日期:1992-08-24 发布日期:1992-08-24
  • 通讯作者: 黄竹坡
  • 基金资助:

    国家自然科学基金

Luminescence of Tb3+ and Its Sensitization by Ce3+ in Matrix La2Na2Sr6(PO4)6Br2

SONG Jia-Qing, HUANG Zhu-Po   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1991-09-21 Online:1992-08-24 Published:1992-08-24

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摘要： 用高温固相反应法合成了发光材料、研究了Tb3+在La2Na2Sr6(PO4)6Br2基质中的光致发光性质及Ce3+对Tb3+的敏化作用.在254nm紫外光激发下,Tb3+的发光较弱,但Ce3+对Tb3+有强的敏化作用,其能量传递机埋是偶极-偶极相互作用引起的共振能量传递,计算了传递效率。

关键词: 发光, 敏化发光, 稀土, 碱土金属, 卤磷酸盐

Abstract: The phosphor samples were prepared by high temperature solid state reactions.Pho-toluminescence of Tb3+ ions and its sensitization by Ce3+ ions were studied systematically.Luminescence of Tb3+ excited by UV 254 nm is weak,but can be enhanced by the sensitization of Ce3+ ions.The mechanism of energy transfer from Ce3+ to Tb3+ is of resonance nature caused by dipole-dipole interaction.Efficiency of such energy transfer was calculated.

Key words: Luminescence, Sensitization luminescence, Rare earth, Alkaline earth metal, Halophosphates

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