高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (9): 1276.

• 论文 • 上一篇    下一篇

Y2O3－Nb2O5－B2O3:Eu3+·Bi3+的燐光体的晶体结构与光谱性质

张静筠1, 周誓红1, 苏锵1, 樊盛春2   

  1. 1. 中国科学院长春应用化学研究所, 长春, 130022;
    2. 南昌大学化学系
  • 收稿日期:1993-10-27 修回日期:1994-04-20 出版日期:1994-09-24 发布日期:1994-09-24
  • 通讯作者: 张静筠,女,53岁,副研究员.
  • 作者简介:张静筠,女,53岁,副研究员.
  • 基金资助:

    国家自然科学基金

Crystal Structure and Luminescence Properties of Y2O3-Nb2O5-B2O3:Eu3+,Bi3+ Phosphors

ZHANg Jing-Jun1, ZHOU Shi-Hong1, SU Qiang1, FAN Sheng-Chun2   

  1. 1. Changchun Institute of Applied Chemitry, Academia Sinica, Changchun 130022;
    2. Department of Chemistry, Nanchang University
  • Received:1993-10-27 Revised:1994-04-20 Online:1994-09-24 Published:1994-09-24

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摘要： 采用常规固相反应于1200℃下制备了具有褐钇铌矿结构的Y2O3·Nb2O5·B2O3(Y0.93Eu0.07)2O3·Nb2O5·B2O3和(Y0.91Eu0.07Bi0.02))2O3·Nb2O5·B2O3等光体,研究了它们的发光性质:结果表明,在268nm紫外光激发下,由于NbO4基团于410nm处发生1T→1A1跃迁,致使Y2O5·Nb2O5·B2O3呈现更亮的紫外发射。体系中的B2O3可降低反应温度,增强NbO4和Eu3+的发光强度。(Y0.091Eu0.07Bi0.02)2O3·Nb2O5·B2O3磷光体系中所观察到的NbO4→Eu3+和Bi3+→Eu3+的能量传递使红光发射明显增强。

关键词: 铕, 铋, 发光, 铌酸盐, 能量传递

Abstract: In this paper, Y2O3-Nb2O5-B2O3(2), Y0.93Eu0.07)2O3-Nb2O5·B2O3(4) and(Y0.91Eu0.07 Bi0.02)2O3-Nb2O5-B2O3(5)phosphors were prepared by usual solid state reaction at 1200℃. The luminescence properties of these samples with fergusonite structure are reported and discussed. Under 268 nm excitation, Y2O3-Nb2O5-B2O3(2)shows much brighter blueviolet luminescence due to 1T1-1A1 level transition of NbO4 group with a maximum at 410 nm.The B2O3 in the system can reduce the reaction temperature and increase the emission intensity of NbO4 group and Eu3+.The energy transfer from NbO4 to Eu3+and from Bi3+to Eu3+is observed in(Y0.91Eu0.07Bi0.02)2O3-Nb2O5-B2O3(5)phosphor, so that the red emission of Eu3+ is enhanced sensibly.

Key words: Europium, Bismuth, Luminescence, Niobate, Energy transfer

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