应用化学 ›› 2023, Vol. 40 ›› Issue (3): 374-379.DOI: 10.19894/j.issn.1000-0518.220104

• 研究论文 • 上一篇    下一篇

稀土Yb3+/Tm3+掺杂NaGd(MO42荧光粉的制备及其光致发光

卜芃1, 李宏亮2()   

  1. 1.湖南警察学院刑事科学技术系,长沙 410083
    2.中南大学化学化工学院,长沙 410083
  • 收稿日期:2022-04-02 接受日期:2022-11-08 出版日期:2023-03-01 发布日期:2023-03-27
  • 通讯作者: 李宏亮

Preparation and Upconversion Luminescence Study of Rare Earth Yb3+/Tm3+ Doped NaGd(MO42 Phosphors

Peng BU1, Hong-Liang LI2()   

  1. 1.Department of Criminal Science and Technology,Hunan Police College,Changsha 410138,China
    2.Chemistry and Chemicl Engineering of Central South University,Changsha 410083,China
  • Received:2022-04-02 Accepted:2022-11-08 Published:2023-03-01 Online:2023-03-27
  • Contact: Hong-Liang LI
  • About author:2991770329@qq.com
  • Supported by:
    the Scientific Research Project of the Eclucation Department of Hunan Province(19C0714)

摘要:

近年来稀土掺杂的上转换发光材料在太阳能电池、工业照明和医学等领域的应用越来越受到重视,目前的研究主要集中于新型高效稀土上转换发光材料的开发。对于发光材料的制备,基质的选择尤为重要,钼酸盐因具有稳定的物理化学性能、低的声子能量而从众多基质中脱颖而出。本文选择钼酸盐为稀土离子掺杂的基质材料,采用水热法制备了Tm、Yb离子掺杂的NaGd(MoO42样品。通过改变离子掺杂的浓度,探究了NaGd(MoO42荧光粉的发光特性。研究表明,在980 nm激光照射下,NaGd(MO42∶Yb3+/Tm3+在477 nm处发射蓝色荧光,在648 nm处发射红色荧光。固定Yb3+的掺杂摩尔分数为6%,改变Tm3+的掺杂摩尔分数分别为0、0.5%、1%和2%时,发现随着Tm3+掺杂摩尔分数的增加,477 nm处的发射峰的强度先升高后降低,当Tm3+的掺杂摩尔分数为0.5%时,钼酸盐荧光粉的发光强度最大,在多色照明及光源器件的应用方面有广阔的发展前景。

关键词: 稀土掺杂, 钼酸盐, 上转换发光, 微观形貌

Abstract:

In recent years, rare-earth-doped up-conversion luminescent materials have received increasing attention in solar cells, industrial lighting, and medical fields. The current research is mainly to find new and efficient rare-earth up-conversion luminescent materials. For the study of luminescent materials, the choice of matrix is particularly important. Molybdate stands out from many matrixes due to its stable physical and chemical properties and low phonon energy. In this paper, molybdate is selected as the matrix material doped with rare earth ions. Tm and Yb ion-doped NaGd(MoO42 samples are prepared by hydrothermal method, and the change of the luminescence characteristics of NaGd(MoO42 phosphor is explored by changing the ion doping concentration. Through the analysis of its spectrum, it is found that under 980 nm laser irradiation, NaGd(MO42∶Yb3+/Tm3+ has a blue emission peak at 477 nm and a red emission peak at 648 nm. When the doping mole fraction of fixed Yb3+ is 6% and the doping mole fraction of Tm3+ is changed to 0, 0.5%, 1% and 2% respectively, it is found that with the increase of the doping mole fraction of Tm3+, the intensity of the emission peak at 477 nm first increases and then decreases. When the doping mole fraction of Tm3+ is 0.5%, the luminous intensity of molybdate phosphor first increases and then decreases to the maximum. It has broad prospects in the application of multi-color lighting and light source devices.

Key words: Rare earth doping, Molybdate, Up-conversion luminescence, Micromorphology

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