高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (2): 208.

• 研究论文 • 上一篇    下一篇

CaBPO5;RE(RE=Eu,Tb)的水热合成及其发光特性

刘晓瑭1,2, 谢德民1, 石春山3   

  1. 1. 东北师范大学化学学院, 长春 130024;
    2. 湛江师范学院化学系, 湛江 524048;
    3. 中国科学院长春应用化学研究所稀土化学与物理重点实验室, 长春 130022
  • 收稿日期:2003-05-09 出版日期:2004-02-24 发布日期:2004-02-24
  • 通讯作者: 石春山(1939年出生),男,研究员,博士生导师,从事稀土固体化学研究.E-mail;cshi@ns.ciac.jl.cn E-mail:cshi@ns.ciac.jl.cn
  • 基金资助:

    国家自然科学基金(批准号;50072031);广东省教育厅自然科学重点科研项目(批准号;粤高教科[1999]89)资助.

Hydrothermal Synthesis and Photoluminescent Properties of CaBPO5;RE(RE=Eu,Tb) Phosphors

LIU Xiao-Tang1,2, XIE De-Min1, SHI Chun-Shan3   

  1. 1. Faculty of Chemistry, Northeast Normal University, Changchun 130024, China;
    2. Department of Chemistry, Zhanjiang Normal College, Zhanjiang 524048, China;
    3. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2003-05-09 Online:2004-02-24 Published:2004-02-24

摘要: 利用水热法合成了CaBPO5;RE(RE=Eu,Tb)荧光体并测试了其结构和光谱,讨论了其发光性质,并与高温固相法合成的产物作了对比.结果表明,由于电子转移,Eu3+,Tb3+和Eu2+共存于同一体系中,而且Eu2+的发射位置从402nm移至428nm.在双掺杂体系中引入Ce3+,Eu3+,Tb3+和Eu2+的发光强度均有所增强,这可能是Ce3+与Eu3+之间的电子转移及各种稀土离子之间能量传递相互竞争的结果.

关键词: 硼磷酸钙, 稀土离子, 水热合成, 光谱

Abstract: CaBPO5;RE(RE=Eu,Tb) phosphors were synthesized by hydrothermal method under a mild condition. The products were characterized by X-ray powder diffraction, scanning electron microscopy and luminescence spectrometer, etc.. Photoluminescence characteristics of the rare earth ions and sensitization of Ce3+ were investigated and compared with that of products prepared by solid state reaction at a high temperature. The results show that Eu3+, Tb3+ and Eu2+ co-exist in one matrix because there is an electron transfer process between Eu3+and Tb3+. It is interesting that the emission spectrum is peaked at 428 nm for Eu2+ in CaBPO5;Eu,Tb prepared by hydrothermal method. Sensitization of Ce3+ improves the intensity of emission of Eu3+, Tb3+ and Eu2+. The reasons maybe are the competitions between the electron transfer among conjugate rare earth ions and the energy transfer between Ce3+ and Eu3+, Eu2+ and Tb3+.

Key words: Calcium borate-phosphate, Rare earth ion, Hydrothermal synthesis, Spectrum

中图分类号: 

TrendMD: