高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (3): 314.

• 研究论文 • 上一篇    下一篇

铕(Ⅲ)激活的磷酸镧发光性质研究

周济, 苏勉曾   

  1. 北京大学化学系, 北京 100871
  • 收稿日期:1992-09-15 修回日期:1992-10-17 出版日期:1993-03-24 发布日期:1993-03-24
  • 通讯作者: 苏勉曾
  • 基金资助:

    国家自然科学基金

Studies on the Luminescene of Eu3+-doped Lanthanum Phosphate

ZHOU Ji, SU Mian-Zeng   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1992-09-15 Revised:1992-10-17 Online:1993-03-24 Published:1993-03-24

摘要: LaPO4:Eu3+的发射光谱包含较强的Eu3+5Do7F1跃迁发射和较弱的6D17F1跃迁发射。主发射峰583nm,对应于Eu3+5Do7F1跃迁.通过对Eu3+的两种跃迁发射强度及荧光寿命和Eu3+浓度关系的测定和理论分析,探讨了发光中心Eu3+离子同的交叉弛豫和能量迁移机理。

关键词: 磷酸镧铕, 发光, 能量传递, 交叉弛豫

Abstract: Emission spectrum of Eu3+-doped lanthanum phosphate consists of strong emission of Eu3+ 5Do7F1transitions and weak emission of Eu3+5Do7F1transitions.The main peak of 583 nm is originated from 5Do7F1 transition.According to the Eu-concentration dependence of the emission intensity and fluorescence life-time of these two types of transition, the mechanism of cross-relaxation and energy transfer between Eu3+ions have been investigated.

Key words: Lanthanum europium phosphate, Luminescence, Energy transfer, Cross-relaxation

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