高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (11): 2373.doi: 10.7503/cjcu20120400

• 研究论文: 无机化学 • 上一篇    下一篇

Dy3+,Eu3+双掺单基质Ca9Y(PO4)7白色荧光粉的合成与发光性能

李云丽1,2, 梁玉军1,2, 黄文珠2, 夏章艮2, 公衍生2, 周炜2   

  1. 1. 中国地质大学(武汉)教育部纳米矿物材料及应用工程研究中心, 武汉 430074;
    2. 材料与化学学院, 武汉 430074
  • 收稿日期:2012-04-26 出版日期:2012-11-10 发布日期:2012-10-15
  • 通讯作者: 梁玉军,男,教授,主要从事无机发光材料的合成与应用研究.E-mail:yujunliang@sohu.com E-mail:yujunliang@sohu.com
  • 基金资助:

    国家自然科学基金(批准号: 21171152)和广东省部产学研项目(批准号: 2010B090400437)资助.

Synthesis and Luminescent Characteristics of Dy3+/Eu3+ Co-doped Single-phased Ca9Y(PO4)7 White-light-emitting Phosphors

LI Yun-Li1,2, LIANG Yu-Jun1,2, HUANG Wen-Zhu2, XIA Zhang-Gen2, GONG Yan-Sheng2, ZHOU Wei2   

  1. 1. Engineering Research Center of Nano-Geomaterials, Ministry of Education, China University of Geosciences, Wuhan 430074, China;
    2. Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
  • Received:2012-04-26 Online:2012-11-10 Published:2012-10-15

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摘要：

以具有多种格位的Ca9Y(PO4)7作为基质, 以Dy3+和Eu3+作为共激活剂, 利用高温固相法合成了一种单基质白光荧光粉. X射线衍射证实样品属于三方晶系菱面体结构, Dy3+和Eu3+在Ca9Y(PO4)7晶体中占据了Y3+ 的格位. 样品在365 nm紫外线激发下, 荧光光谱同时出现了Dy3+和Eu3+的特征发射, 且发光强度以及色度坐标随着Dy3+和Eu3+掺杂比率的变化而有规律变化, 所有样品的发射均处于白光区域. 利用近紫外芯片作为激发源, 单一基质白色荧光粉Ca9Y1-x-y(PO4)7: xDy3+, yEu3+可应用于白光发光二极管等领域.

关键词: 发光材料, 固相合成, 光学性质, 白色荧光粉

Abstract:

A single-phased Ca9Y(PO4)7: Dy3+,Eu3+ white-light-emitting phosphors were synthesized by solid-state reaction. X-ray diffractometer and fluorescence spectrophotometer were used to character their structures and photoluminescence properties. XRD results exhibit that Ca9Y(PO4)7: Dy3+,Eu3+ phosphors belong to rhombohedra structure, Dy3+ and Eu3+ in the host of Ca9Y(PO4)7 replace the site of Y3+. The emission and excitation spectra show that Dy3+ and Eu3+ can be effectively excited by UV light. The luminescence intensities and chromaticity coordinates can be modified by controlling the concentration and the ratio of doping agent Dy3+ and Eu3+, and all samples’ chromaticity coordinates are located in white light area. Therefore, the as-fabricated single-phased Ca9Y(PO4)7: Dy3+, Eu3+ have potential applications in the field of white light emitting diodes(LEDs).

Key words: Luminescent material, Solid-state reaction, Optical property, White-light-emitting Phosphors

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