高等学校化学学报

高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (11): 2127.

• 研究论文 • 上一篇    下一篇

YVO4∶Sm3+红色发光材料的熔盐法合成与光谱性能

刘蓉1,2,3, 梁玉军1,2, 吴晓勇1,2, 李永周1,2, 公衍生1,2   

  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,
    2. 材料科学与化学工程学院, 武汉 430074;
    3. 湖北民族学院化学与环境工程学院, 恩施 445000
  • 收稿日期:2008-12-12 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 梁玉军, 男, 博士, 副教授, 主要从事有机、无机发光材料和发光器件的研究. E-mail: yujunliang@sohu.com
  • 基金资助:

    湖北省自然科学基金(批准号: 2007ABA343)和佛山市科技发展专项资金(批准号: 2006021B)资助.

Synthesis and Luminescent Properties of YVO4∶Sm3+ Red Phosphor by Molten Salt Synthesis Method

LIU Rong1,2,3, LIANG Yu-Jun1,2*, WU Xiao-Yong1,2, LI Yong-Zhou1,2, GONG Yan-Sheng1,2   

  1. 1. Engineering Research Center of Nano-Geomaterials of Ministry of Education,
    2. Faculty of Materials Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, China;
    3. School of Chemical and Environmental Engineering, Hubei University for Nationalities, Enshi 445000, China
  • Received:2008-12-12 Online:2009-11-10 Published:2009-11-10
  • Contact: LIANG Yu-Jun. E-mail: yujunliang@sohu.com
  • Supported by:

    湖北省自然科学基金(批准号: 2007ABA343)和佛山市科技发展专项资金(批准号: 2006021B)资助.

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摘要：

采用熔盐法合成了YVO4∶Sm3+红色发光材料. 用X射线粉末衍射对其结构进行表征, 证实样品为具有锆石结构的YVO4相; 测定了样品的激发与发射光谱; 分析了不同的掺杂浓度和烧结温度对样品发光强度的影响. 研究结果表明, 采用熔盐法合成的样品均可以产生Sm3+的特征发射, 但是与其它方法相比, 熔盐法合成样品位于647 nm处Sm3+的4G5/2-6H9/2发射明显得到加强, 从而使得样品发出明亮的红光, 而不是其它合成方法获得的橙色光. 当掺杂浓度为1%(摩尔分数)且在500 ℃下烧结5 h后, 熔盐法得到的YVO4∶Sm3+荧光粉的发光强度最大.

关键词: YVO4∶Sm3+; 熔盐法; 发光材料; 钐离子

Abstract:

Luminescent materials YVO4∶Sm3+ were successfully prepared using NaNO3 as the molten salt by molten salt synthesis(MSS) method. The phosphors obtained were treated with different calcination temperatures and doping concentrations to get better luminescent properties. The uniformity of phase of Sm3+ doped YVO4 phosphor was checked by X-ray diffraction(XRD) technique. In addition, the dependence of the luminescence intensity on doping concentrations and annealing temperatures were discussed. The results show the characteristic emissions of the doped rare earth ions(Sm3+) in YVO4 hosts. The emission at 647 nm due to 4G5/2-6H9/2 transition of Sm3+ ions was improved drastically by MSS method than other methods. All samples show red emission and the best red light emission is observed with YVO4∶Sm3+(Sm3+ molar fraction 1%) after calcinated at 500 ℃ for 5 h.

Key words: YVO4∶Sm3+; Molten salt synthesis method; Luminescent material; Samarium ion

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