高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (4): 794.doi: 10.7503/cjcu20120662

• 研究论文: 无机化学 • 上一篇    下一篇

白色荧光粉NaGd(MoO4)2: Dy3+,Eu3+的水热合成及发光性能

姜营营, 刘桂霞, 王进贤, 董相廷, 于文生   

  1. 长春理工大学化学与环境工程学院, 应用化学与纳米技术吉林省高校重点实验室, 长春 130022
  • 收稿日期:2012-07-16 出版日期:2013-04-10 发布日期:2013-03-20
  • 通讯作者: 刘桂霞,女,博士,教授,主要从事无机固体功能材料研究.E-mail:liuguixia22@yahoo.com.cn E-mail:liuguixia22@yahoo.com.cn
  • 基金资助:

    国家自然科学基金(批准号:51072026,50972020)和吉林省科技发展计划项目(批准号:20090528)资助.

Hydrothermal Preparation and Luminescence Properties of NaGd(MoO4)2: Dy3+,Eu3+ White-light Phosphors

JIANG Ying-Ying, LIU Gui-Xia, WANG Jin-Xian, DONG Xiang-Ting, YU Wen-Sheng   

  1. School of Chemistry and Environmental Engineering, Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022, China
  • Received:2012-07-16 Online:2013-04-10 Published:2013-03-20

摘要:

采用谷氨酸辅助水热法合成了八面体形NaGd(MoO4)2: Dy3+,Eu3+白色荧光粉. X射线衍射结果表明, 合成的样品为四方晶系的NaGd(MoO4)2纯相. 扫描电子显微镜照片显示所制备的粒子为八面体形, 各边长约为2 μm. 荧光光谱结果表明, 在NaGd(MoO4)2: 4%Dy3+,yEu3+(y=0, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%)样品中, 随着Eu3+掺入量的增加, Dy3+的发射峰逐渐减弱, 而Eu3+的发射峰逐渐增强, 说明Dy3+-Eu3+之间存在能量传递. 通过色坐标图可知, 当Eu3+掺杂量y=0.9%时, 荧光粉的色坐标(0.338, 0.281)与标准的白光色坐标(0.33, 0.33)接近, 表明NaGd(MoO4)2: 4%Dy3+,0.9%Eu3+是很好的近紫外光激发下的白色荧光粉.

关键词: NaGd(MoO4)2: Dy3+,Eu3+, 发光材料, 白光, 水热合成

Abstract:

Dy, Eu co-doped NaGd(MoO4)2 white-light phosphors were prepared by a simple glutamic acid-assisted hydrothermal method. X-Ray diffraction(XRD) patterns show that the samples are tetragonal phase NaGd(MoO4)2. Scanning electron microscopy(SEM) images show that the as-prepared particles have an octagonal shape with each side length of about 2 μm. In the fluorescence spectra of NaGd(MoO4)2: Dy,Eu, it is found that the emission intensity of Eu3+ increased and the emission intensity of Dy3+ decreased with increasing the amount of Eu3+ and maintaining the concentration of Dy3+. The energy transmission of Dy3+-Eu3+ is observed. From Commission Internationale de L'Eclairage(CIE) chromaticity diagram, it is noted that white light can be achieved in NaGd(MoO4)2: 4%Dy3+,0.9%Eu3+ phosphor, the CIE color coordinates(0.338, 0.281) are near to the standard color coordinates(0.33, 0.33).

Key words: NaGd(MoO4)2: Dy3+,Eu3+, Luminescent material, White light, Hydrothermal preparation

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