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首页> 外文期刊>RSC Advances >Highly enterprising calcium zirconium phosphate [CaZr4(PO4)(6):Dy3+, Ce3+] phosphor for white light emission
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Highly enterprising calcium zirconium phosphate [CaZr4(PO4)(6):Dy3+, Ce3+] phosphor for white light emission

机译：高度进取的钙磷酸钙[Cazr4（PO4）（6）：DY3 +，CE3 +]磷光体用于白光发射

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摘要

A series of CaZr4(PO4)(6): Dy3+, CaZr4(PO4)(6): Ce3+ and CaZr4(PO4)(6): Dy3+, Ce3+ phosphors were prepared by the solid state reaction process. The phase formation was confirmed by X-ray powder diffraction (XRD) measurements. Morphological studies were performed using scanning electron microscopy. Raman spectra were studied to identify the scattering bands associated with the normal vibrational modes of the PO43-tetrahedron. The photoluminescence properties of the phosphors were systematically investigated. With increasing Dy3+ concentration in CaZr4(PO4)(6): Dy3+ phosphor, the luminescence intensity first increases, reaches the maximum, and then decreases. A similar trend is followed by CaZr4(PO4)(6): Ce3+ phosphors, with increasing Ce3+ concentration. A successful attempt was made to initiate the energy transfer mechanism from Ce3+ to Dy3+ ions in the CaZr4(PO4)(6) host lattice. The CIE chromaticity coordinates of CaZr4(PO4)(6): Dy3+ phosphor exhibited emission near the white-light region and hence, it is a potential candidate for UV excited white-LEDs (WLEDs). CaZr4(PO4)(6): Dy3+, Ce3+ phosphor has its CIE chromaticity coordinates in the white light region, near the standard illuminant D-65. Thermoluminescence (TL) studies on CaZr4(PO4)(6): Dy3+, Ce3+ phosphor, which was performed to test its stability against low dose of gamma-ray exposure, are also documented.
机译：一系列CAZR4（PO4）（6）（6）：DY3 +，CAZR4（PO4）（6）：CE3 +和CAZR4（PO4）（6）：DY3 +，CE3 +磷光体由固态反应过程制备。通过X射线粉末衍射（XRD）测量证实相形成。使用扫描电子显微镜进行形态学研究。研究了拉曼光谱，以识别与PO43-四面体的正常振动模式相关的散射带。系统地研究了磷光体的光致发光性质。随着CAZR4（PO4）（6）（6）：DY3 +磷光体的增加，发光强度首先增加，达到最大值，然后减少。同样的趋势之后是Cazr4（PO4）（6）：CE3 +磷光体，CE3 +浓度增加。成功地尝试从CE3 +到CE3 +离子中的能量转移机制在CAZR4（PO4）（6）宿主格子中。 CIE CIE CIE CIE CIE色度坐标（PO4）（6）：DY3 +磷光体在白光区域附近发出，因此是UV激发白光LED（WLED）的潜在候选者。 CAZR4（PO4）（6）：DY3 +，CE3 +磷光体在白色光区域中具有其CIE色度坐标，附近标准光源D-65。还记录了对CAZR4（PO4）（6）（6）的研究（6）（6）：DY3 +，CE3 +磷光体的研究。还记录了对低剂量γ射线暴露的稳定性进行测试。

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  • 来源
    《RSC Advances》 |2015年第61期|共13页
  • 作者

    Nair Govind B.; Dhoble S. J.;

  • 作者单位

    RTM Nagpur Univ Dept Phys Nagpur 440033 Maharashtra India;

    RTM Nagpur Univ Dept Phys Nagpur 440033 Maharashtra India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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