Luminescence studies of Ba_1−xMg_2−y(PO₄)₂:xEu²⁺, yMn²⁺ phosphor

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• 作者：Zhiping Yang ; Shuyuan Ma ; Hongwei Yu ; Fenghe Wang ; Xin Ma ; Yufeng Liu ; Panlai Li
• 关键词：Phosphor ; Luminescence ; Energy transfer ; BaMg₂(PO₄)₂ ; Eu²⁺ ; Mn²⁺
• 刊名：Journal of Alloys and Compounds
• 出版年：2011
• 出版时间：5 January 2011
• 年：2011
• 卷：509
• 期：1
• 页码：76-79
• 全文大小：290 K

文摘

The phosphors BaMg₂(PO₄)₂ doped with Eu²⁺ and Mn²⁺ solely or doubly were prepared by solid state reaction, and their luminescent properties were also investigated. Under the excitation of 322 nm, it has been observed a broad blue emission band centered at 417 nm and a red emission band centered at about 665 nm, resulting from Eu²⁺ and Mn²⁺, respectively. Resonance-type energy transfers from Eu²⁺ to Mn²⁺ were discovered by directly overlapping the emission spectra of Eu²⁺ and the excitation spectra of Mn²⁺. According to the changes of relative intensities of Eu²⁺ and Mn²⁺ emission, efficiencies of energy transfer were calculated. Based on the principle of energy transfer, the relative intensities of blue and red emission could be tuned by adjusting the contents of Eu²⁺ and Mn²⁺.