高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (10): 1789.

• 研究论文 • 上一篇    下一篇

空气中合成M2B4O7:Eu3+(M=Na,K)荧光体及其性质表征

刘晓瑭1,2, 石春山3, 谢德民1, 庄国雄2, 梁慧影2, 杨丹2   

  1. 1. 东北师范大学化学学院, 长春130024;
    2. 湛江师范学院生命科学与化学学院, 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开放实验室, 长春130022
  • 收稿日期:2004-02-27 出版日期:2004-10-24 发布日期:2004-10-24
  • 基金资助:

    国家自然科学基金(批准号:90201032)资助

Preparation of Phosphors M2B4O7:Eu3+(M=Na, K) in Ambient Air and Their Property Characterization

LIU Xiao-Tang1,2, SHI Chun-Shan3, XIE De-Min1, ZHUANG Guo-Xiong2, LIANG Hui-Ying2, YANG Dan2   


  1. 1. Faculty of Chemistry, Northeast Normal University, Changchun 130024, China;
    2. School of Life Science and Chemistry, Zhanjiang Normal College, Zhanjiang 524048, China;
    3. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2004-02-27 Online:2004-10-24 Published:2004-10-24

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摘要： 以M2B4O7(M=Na,K)为基质,在空气中掺杂稀土元素Eu3+得到了Na2B4O7:Eu3+和K2B4O7:Eu3+荧光体.探讨了体系的烧结条件和荧光性质,分析了晶体的结构.结果表明,虽然两种体系的最佳合成条件不同,但是体系中都同时存在[BO4]和[BO3]结构;稀土离子Eu3+的发光以电偶极跃迁5D0-7F2为主,处于非中心对称的格位上,并且可以很好地存在于基质中,Na2B4O7:Eu3+具有较强的发光强度.

关键词: Na2B4O7:Eu3+, K2B4O7:Eu3+, 晶体结构, 荧光性质

Abstract: M2B4O7:Eu3+(M=Na, K) phosphors were synthesized by solid state reaction in ambient air. The optimum preparing conditions were studied and phase analyses were carried out by using powder XRD method. The structure of the borates contains both [BO3] and [BO4] coordination polyhedra. The luminescent properties of M2B4O7:Eu3+ under ultraviolet light excitation were studied. The results show that the predominant emission of Eu3+ is 5D0- 7F2 transition, demonstrating that the rare earth ions occupy the non-centrosymmetrical sites in M2B4O7 and Eu3+ ion can be stable in the matrix. The intensity of emission of Na2B4O7:Eu3+ is stronger than that of K2B4O7:Eu3+ when the doped Eu3+ concentration is the same.

Key words: Na2B4O7:Eu3+, K2B4O7:Eu3+, Crystal structure, Luminescent property

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