高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (6): 760.

• 研究论文 • 上一篇    下一篇

碱土金属锡酸盐掺铕体系荧光粉合成和荧光性质研究

李沅英, 陈火阳, 杨燕生   

  1. 中山大学化学系, 广州 510275
  • 收稿日期:1992-06-17 修回日期:1992-12-15 出版日期:1993-06-24 发布日期:1993-06-24
  • 通讯作者: 李沅英
  • 基金资助:

    高等学校博士学科点专项科研基金

Studies on the Synthesis and Fluorescent Property of Alkaline Earth Stannates Doped Europium

LI Yuan-Ying, CHEN Huo-Yang, YANG Yan-Sheng   

  1. Deparment of Chemistry, Zhoagshan University, Guangzhou, 510275
  • Received:1992-06-17 Revised:1992-12-15 Online:1993-06-24 Published:1993-06-24

摘要: 本文报道了MSnO3:Eu3+和M2SnO4:Eu3+(M=Ca,Sr,Ba)体系荧光粉的合成和荧光性质。产品经X射线确证CaSnO3:Eu3+和Ca2SnO4:Eu3+为正交晶系,SrSnO3:Eu3+和BaSnO2:Eu3+为立方晶系,而Sr2SnO4:Eu3+和Ba2SnO4:Eu3+为四方晶系。激发光谱表明,随Ba—Sr—Ca离子半径减小,Eu3+的电荷迁移能量紫移,而Eu3+的f-f跃迁红移。发射光谱表明,CaSnO3:Eu3+和Ca2SnO4:Eu3+以电偶极跃迁为主,而其它4种化合物不存在电偶极跃迁。

关键词: 铕, 碱土锡酸盐, 合成, 荧光光谱

Abstract: The synthesis and fluorescent property of MSnO3:Eu3+ and M2SnO4:Eu3+(M=Ca,Sr, Ba) have been reported.The phosphors were prepared by mixing the solution of MCl2(M=Ca,Sr, Ba) SnCl2 and EuCl3 according to stoichiometry.Their oxalates were coprecipitated and sintered at 1400-1500℃ for 5-6 h.Structures of the phosphors were confirmed by X-ray diffraction analysis, and CaSnO3:Eu3+ and Ca2SnO4:Eu3+ belong to othorhomic system, SrSnO3:Eu3+ and BaSnO3:Eu3+ the cubic, Sr2SnO4:Eu3+ and Ba2SnO4:Eu3+ the tetragonal.The excited and emission spectra of the phosphors show that, the energy of charge transfer transition for Eu3+ shifts to the blue, and energy of f-f transition for Eu3+ shifts to the red.The CaSnO3:Eu3+ and Ca2SnO4:Eu3+ show the major electric dipole transition.The other four phosphors show the major magnetic dipole transition.

Key words: Europium, Alkaline earth stannates, Synthesis, Fluorescent property

TrendMD: