Luminescent properties and energy transfer of Y₃Al₅O₁₂:Ce³⁺, Ln³⁺ (Ln=Tb, Pr) prepared by polymer-assisted sol-gel method

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• 作者：Xianju Zhou ; Kaining Zhou ; Yingmao Li ; Zhiliang Wang ; Qiaochun Feng
• 关键词：Y3Al5O12 ; Ce3+ ; Pr3+ ; Y3Al5O12 ; Ce3+ ; Tb3+ ; Energy transfer ; Sol&ndash ; gel method
• 刊名：Journal of Luminescence
• 出版年：2012
• 出版时间：November, 2012
• 年：2012
• 卷：132
• 期：11
• 页码：3004-3009
• 全文大小：999 K

文摘

Y₃Al₅O₁₂:Ce³⁺, Pr³⁺ and Y₃Al₅O₁₂:Ce³⁺, Tb³⁺ nano-particles have been synthesized by polymer-assisted sol-gel method. Crystal structure, luminescent properties and energy transfer of the phosphors are analyzed. XRD study of polycrystalline powders shows that all the samples are of YAG phase without impurity. Photoluminescence (PL) emission and excitation spectra illustrate that in YAG:Ce, Pr phosphors, energy transfer occurs mutually between Ce³⁺ and Pr³⁺, while in YAG:Ce, Tb systems, only one-way path energy transfer of Tb³⁺¡úCe³⁺ is observed.