中国物理B ›› 2017, Vol. 26 ›› Issue (8): 87801-087801.doi: 10.1088/1674-1056/26/8/087801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Shape controllable synthesis and enhanced upconversion photoluminescence of β-NaGdF4:Yb3+, Er3+ nanocrystals by introducing Mg2+

Yong-Xin Yang(杨永馨), Zheng Xu(徐征), Su-Ling Zhao(赵谡玲), Zhi-Qin Liang(梁志琴), Wei Zhu(朱薇), Jun-Jie Zhang(张俊杰)   

  1. 1 Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;
    2 Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2017-02-16 修回日期:2017-05-08 出版日期:2017-08-05 发布日期:2017-08-05
  • 通讯作者: Zheng Xu E-mail:zhengxu@bjtu.edu.cn
  • 基金资助:

    Project supported by the National High Technology Research and Development Program of China (Grant No. 2013AA032205), the Key Project of Beijing Scientific Committee, China (Grant No. D161100003416001), the Fundamental Research Funds for the Central Universities, China (Grant No. 2016JBM066), and the National Natural Science Foundation of China (Grant Nos. 51272022 and 11474018).

Shape controllable synthesis and enhanced upconversion photoluminescence of β-NaGdF4:Yb3+, Er3+ nanocrystals by introducing Mg2+

Yong-Xin Yang(杨永馨)1,2, Zheng Xu(徐征)1,2, Su-Ling Zhao(赵谡玲)1,2, Zhi-Qin Liang(梁志琴)1,2, Wei Zhu(朱薇)1,2, Jun-Jie Zhang(张俊杰)1,2   

  1. 1 Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;
    2 Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
  • Received:2017-02-16 Revised:2017-05-08 Online:2017-08-05 Published:2017-08-05
  • Contact: Zheng Xu E-mail:zhengxu@bjtu.edu.cn
  • About author:0.1088/1674-1056/26/8/
  • Supported by:

    Project supported by the National High Technology Research and Development Program of China (Grant No. 2013AA032205), the Key Project of Beijing Scientific Committee, China (Grant No. D161100003416001), the Fundamental Research Funds for the Central Universities, China (Grant No. 2016JBM066), and the National Natural Science Foundation of China (Grant Nos. 51272022 and 11474018).

摘要:

Different concentrations of Mg2+-doped hexagonal phase NaGdF4:Yb3+, Er3+ nanocrystals (NCs) were synthesized by a modified solvothermal method. Successful codoping of Mg2+ ions in upconversion nanoparticles (UCNPs) was supported by XRD, SEM, EDS, and PL analyses. The effects of Mg2+ doping on the morphology and the intensity of the upconversion (UC) emission were discussed in detail. It turned out that with the concentration of Mg2+ increasing, the morphology of the nanoparticles turn to change gradually and the UC emission was increasing gradually as well. Notably the UC fluorescence intensities of Er3+ were gradually improved owing to the codoped Mg2+ and then achieved a maximum level as the concentration of Mg2+ ions was 60 mol% from the amendment of the crystal structure of β -NaGdF4:Yb3+, Er3+ nanoparticles. Moreover, the UC luminescence properties of the rare-earth (Yb3+, Er3+ ions codoped NaGdF4 nanocrystals were investigated in detail under 980-nm excitation.

关键词: NaGdF4:Yb3+/Er3+ nanoparticles, Mg2+ ions, morphology, upconversion photoluminescence

Abstract:

Different concentrations of Mg2+-doped hexagonal phase NaGdF4:Yb3+, Er3+ nanocrystals (NCs) were synthesized by a modified solvothermal method. Successful codoping of Mg2+ ions in upconversion nanoparticles (UCNPs) was supported by XRD, SEM, EDS, and PL analyses. The effects of Mg2+ doping on the morphology and the intensity of the upconversion (UC) emission were discussed in detail. It turned out that with the concentration of Mg2+ increasing, the morphology of the nanoparticles turn to change gradually and the UC emission was increasing gradually as well. Notably the UC fluorescence intensities of Er3+ were gradually improved owing to the codoped Mg2+ and then achieved a maximum level as the concentration of Mg2+ ions was 60 mol% from the amendment of the crystal structure of β -NaGdF4:Yb3+, Er3+ nanoparticles. Moreover, the UC luminescence properties of the rare-earth (Yb3+, Er3+ ions codoped NaGdF4 nanocrystals were investigated in detail under 980-nm excitation.

Key words: NaGdF4:Yb3+/Er3+ nanoparticles, Mg2+ ions, morphology, upconversion photoluminescence

中图分类号:  (Absorption and reflection spectra: visible and ultraviolet)

  • 78.40.-q
74.25.Gz (Optical properties) 42.70.-a (Optical materials) 78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters)