化学学报 ›› 2011, Vol. 69 ›› Issue (13): 1565-1569. 上一篇    下一篇

研究论文

Gd3+掺杂对NaY(MoO4)2∶Eu3+荧光粉发光性能影响的研究

刘伟1, 李西林1, 刘娟1, 韩厦1, 闫景辉*,1, 康振辉2, 连洪洲3   

  1. (1长春理工大学化学与环境工程学院 长春 130022)
    (2苏州大学功能纳米与软物质(材料)研究院 苏州 215123)
    (3中国科学院长春应用化学研究所稀土资源利用国家重点实验室 长春 130022)
  • 收稿日期:2011-01-12 修回日期:2011-03-02 出版日期:2011-07-14 发布日期:2011-03-18
  • 通讯作者: 闫景辉 E-mail:yanjinghui8888@yahoo.com.cn
  • 基金资助:

    吉林省教育厅重大科技支撑项目

Influence of Gd3+Doping on Properties of NaY(MoO4)2∶Eu3+ Phosphors

Liu Wei1; Li Xilin1; Liu Juan1; Han Xia1; Yan Jinghui*,1; Kang Zhenhui2 ;Lian Hongzhou3   

  1. (1 School of Chemical and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022)
    (2 Institute of Functional Nano & Soft Materials, Soochow University, Suzhou 215123)
    (3 Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022)
  • Received:2011-01-12 Revised:2011-03-02 Online:2011-07-14 Published:2011-03-18

采用微乳液-水热法制备了NaY(MoO4)2∶Eu3+和Na(Y, Gd)(MoO4)2∶Eu3+荧光粉. 利用X射线衍射(XRD)、扫描电镜(SEM)和荧光光谱手段对样品进行了表征. 所制样品的X射线衍射峰与标准卡片PDF # 82-2369基本吻合. SEM图谱显示所制备的纳米粒子直径为0.5~0.8 μm. 激发-发射光谱显示, 在Eu掺杂浓度为4%时NaY(MoO4)2∶Eu3+发光强度最高|当物质的量的Y∶Gd=0.5∶0.5时, Na(Y, Gd)(MoO4)2∶4%Eu3+的发光强度达到最大, 并且在276, 395和465 nm波长光激发下Na(Y0.48, Gd0.48)(MoO4)2∶4% Eu3+分别发出淡粉、黄色和橙红色光, 可用于白光LED荧光材料.

关键词: 微乳液-水热法, 钼酸盐, 白光二极管, 荧光光谱

Eu3+-doped NaY(MoO4)2 and Na(Y, Gd)(MoO4)2 phosphors were prepared via microemulsionhydrothermal method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and fluorescence spectroscopy were used to characterize the samples. The XRD of as-prepared samples were in agreement with the PDF # 82-2369 of NaY(MoO4)2. SEM images showed that the as-prepared particles had a diameter size ranging from 0.5 to 0.8 μm. The critical activator molar concentration (Eu3+) in NaY(MoO4)2∶Eu3+was 4%, and the luminescent intensity of Na(Y, Gd)(MoO4)2∶4%Eu3+was maximum when Y∶Gd molar ratio at 0.5∶0.5. Excited by 276, 395 and 465 nm, Na(Y0.48, Gd0.48)(MoO4)2∶4%Eu3+exhibited pale pink, yellow and orange-red respectively. The sample of Na(Y, Gd)(MoO4)2∶Eu3+could become a valuable luminescent material for white LED.

Key words: microemulsion-hydrothermal method, molybdates, WLED, fluorescence spectroscopy

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