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化学学报
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化学学报 ›› 1991, Vol. 49 ›› Issue (1): 3-9. 上一篇    下一篇

研究论文

LaOX-Pr^3^+(X=Cl, Br)体系的荧光特性及其配位场理论解析

杨频;李思殿;王越奎   

  1. 山西大学分子科学研究所.太原(030006)
  • 发布日期:1991-01-15

The characteristics and theoretical analysis of the fluorescence spectra of LaOX-Pr^3^+ phosphors

Yang Pin;Li Sidian;Wang Yuekui   

  1. Shanxi Univ., Inst of Mol Sci.Taiyuan(030006)
  • Published:1991-01-15

PDF

643

被引次数

5

LaOX-Pr^3^+(X=Cl,Br)体系在室温和液氮温度下均只观察到^3P~0能级的发射,其原因在于Pr^3^+离子的4f5d激发态具有较高能量(>37kK),且^3P~2,^3P~1向^3P~0存在有效的电子驰豫;本文基于DSCPCF配位场模型的计算结果,对该体系的发射光谱和激发光谱进行了理论归属,实测峰位与计算值较好吻合。

关键词: 解析, 配位场理论, 荧光特性, 磷光体, 稀土, 发射, 能级, 驰豫, 激发光谱, 发射光谱

The excitation and fluorescence spectra of LaOX-Pr^3^+(X=Cl, Br) phosphors were measured at room and liquid nitrogen temperatures. The characteristics of the spectra were interpreted and most of the observed f-f transitions were assigned based on the theoretical energy levels of Pr^3^+ calculated by the Double Sphere Coordination Point Charge Field model. The agreement between the calculated and the observed transition wavelengths is generally good.

Key words: ANALYTIC, LIGAND FIELD THEORY, FLUORESCENCE CHARACTERISTIC, PHOSPHOR, RARE EARTH, EMISSION, ENERGY LEVELS, RELAXATION, EXCITATION SPECTRUM, EMISSION SPECTRA

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