Luminescence and energy transfer properties of Sr₃Y(PO₄)₃:Ce³⁺, Mn²⁺ phosphors

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• 作者：Jun Lin ; Yihua Hu ; ^{huyh@gdut.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Li Chen ; Zhonghua Wang ; Shaoan Zhang
• 关键词：Energy transfer ; Luminescence ; Self-reducing ; Tunable color ; Phosphor
• 刊名：Physica B: Physics of Condensed Matter
• 出版年：2016
• 出版时间：15 March 2016
• 年：2016
• 卷：485
• 期：Complete
• 页码：39-44
• 全文大小：2020 K

文摘

A series of highly efficient Sr_3−yY_1−x(PO₄)₃:xCe³⁺,yMn²⁺(SYP:xCe³⁺, Mn²⁺) phosphors have been prepared via a solid state reaction. The XRD (X-ray diffraction) data, PL (photoluminescence) and PLE (photoluminescence excitation) properties and ET (energy transfer) mechanism of obtained phosphors were discussed. When prepared in air, the self-reducing process of turning Ce⁴⁺ into Ce³⁺ can be found in SYP:xCe³⁺ phosphor. A bright red light emission was presented in the Ce³⁺ and Mn²⁺ co-doping samples via the efficient ET from the sensitizer Ce³⁺ to Mn²⁺, which is ascribed to electric multipolar interaction between these two kinds of ions. The critical concentration of Ce³⁺ in SrY_1−x(PO₄)₃:xCe³⁺ and Mn²⁺ in Sr_3−yY_1−x(PO₄)₃:xCe³⁺, yMn²⁺ are x=0.07 and y=0.15, respectively. In addition, the ET efficiency reach 51.6% when the luminescence intensity of Ce³⁺ is half of that in the absence of Mn²⁺ and the concentration of Mn²⁺ is 0.15. The emission color of the phosphors were also clarify by CIE coordinate briefly.