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首页> 外文期刊>Inorganic Chemistry Communications >A novel single-phased Sr4La6(SiO4)(6)Cl-2:Dy3+ phosphor for white-light-emitting diodes
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A novel single-phased Sr4La6(SiO4)(6)Cl-2:Dy3+ phosphor for white-light-emitting diodes

机译：一种新型单相SR4LA6（SIO4）（6）CL-2：DY3 +白光发光二极管的磷光体

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摘要

A single-phased Sr4La6(SiO4)(6)Cl-2:Dy3+ (SLSOC:Dy3+) white phosphors are successfully synthesized by solid-state method and the photoluminescence properties are investigated. The structural properties of the phosphors are characterized by X-ray powder diffraction (XRD). In addition, ultraviolet-visible diffuse reflectance (UV-Vis DR) spectra, photoluminescence excitation (PLE) and emission (PL) spectra were applied to evaluate the samples. The PLE spectra are consisted of a series of sharp lines from the 4f-4f transitions of Dy3+. Also, two obvious PL peaks are located at 484 and 574 nm, corresponding to F-4(9/2) -> H-6(15/2) (blue) and F-4(9/2) -> H-6(13/2) (yellow) transitions. The optimum concentration of Dy3+ is about 2 mol% and the dipole-dipole interaction is responsible for the concentration quenching mechanism. Eventually, the International Commission on Illumination (CIE) chromaticity coordinates of all phosphors are located in white region. The results turn out that the phosphor could be excited by the near ultraviolet (NUV) and blue light, then it emits white light.
机译：通过固态方法成功合成单相SR4LA6（SIO 4）（6）CL-2：DY3 +（SLSOC：DY3 +）白色磷光体，并研究了光致发光性质。磷光体的结构性质的特征在于X射线粉末衍射（XRD）。另外，应用紫外线可见漫反射率（UV-VIS DR）光谱，光致发光激发激发（PLE）和发射（PL）光谱来评估样品。 PLE光谱由DY3 +的4F-4F转换的一系列尖锐线组成。此外，两个明显的PL峰位于484和574nm，对应于F-4（9/2） - > H-6（15/2）（蓝色）和F-4（9/2） - > H- 6（13/2）（黄色）过渡。 DY3 +的最佳浓度为约2mol％，偶极偶极相互作用负责浓度猝灭机制。最终，国际照明委员会（CIE）所有磷光体的色度坐标都位于白色区域。结果表明，磷光体可以通过近紫外（NUV）和蓝光进行兴奋，然后它发出白光。

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  • 作者

    Wang Shuang; Han Ya-jie; Shi Lei; Jia Ming-xu; Tong Yi-lin; Zhang Bo; Mu Zhong-fei; Lu Xu-lin; Zhang Zhi-wei; Song Ai-jun;

  • 作者单位

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

    Guangdong Univ Technol Sch Phys &

    Optoelect Engn Guangzhou 510006 Peoples R China;

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

    Hebei Normal Univ Sci &

    Technol Chem Engn Coll Qinhuangdao 066600 Hebei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无机化学;基本无机化学工业;
  • 关键词

    Sr4La6(SiO4)(6)Cl-2:Dy3+; Single-phased; White light emitting diodes;

    机译：SR4LA6（SIO4）（6）CL-2：DY3 +;单相位;白光发光二极管;

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