Luminescence properties of LiPr_xCe_1−xP₄O₁₂

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• 作者：T. Shalapska ; G. Stryganyuka ; D. Trotsc ; T. Demkiv ; A. Gektin ; A. Voloshinovskii ; P. Dorenbos
• 关键词：Luminescence ; Pr– ; Ce energy transfer ; Light yield ; Scintillator
• 刊名：Journal of Luminescence
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：130
• 期：10
• 页码：1941-1945
• 全文大小：724 K

文摘

LiPr_1−xCe_xP₄O₁₂ (x=0, 0.002, 0.02; 0.1) powder samples were prepared using the melt solution technique. Luminescent parameters of LiPr_1−xCe_xP₄O₁₂ phosphors have been investigated under ultraviolet–vacuum ultraviolet (3–12 eV) synchrotron radiation and X-rays excitation at room and near liquid He temperatures. Excitation luminescence spectra of Ce³⁺ emission, luminescent spectra and decay curves from the lower excited state levels of the 4f¹5d¹ and 5d¹ electronic configuration of the Pr³⁺ and Ce³⁺, respectively, clearly indicate energy transfer from Pr³⁺ to Ce³⁺. Energy migration proceeds via the Pr-sublattice followed by nonradiation transfer from Pr³⁺ to Ce³⁺ ions.