Upconversion Luminescence Properties of Ho3+/Tm3+/Yb3+ Co-doped NaGd(MO4)2 Prepared by Hydrothermal Method

Authors

  • Zhaoguang Zhang School of Materials Science and Engineering, Chang'an University, China
  • Kuaile Dang School of Materials Science and Engineering, Chang'an University, China
  • Huajian Li School of Materials Science and Engineering, Chang'an University, China
  • Zeyu Song School of Materials Science and Engineering, Chang'an University, China
  • Xiaochen Yu School of Materials Science and Engineering, Chang'an University, China

DOI:

https://doi.org/10.7546/CRABS.2024.01.02

Keywords:

rare-earth doping, white light, fluorescence lifetime, emission spectrum, NaGd(MO4)2

Abstract

In this paper, Ho$$^{3+}$$/Tm$$^{3+}$$/Yb$$^{3+}$$-doped NaGd(MO$$_{4})_{2}$$ phosphors were prepared using the hydrothermal method and the effect of Yb$$^{3+}$$ doping amount on the luminescence properties of these phosphor materials was investigated. NaGd(MO$$_{4})_{2}$$ was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and spectral analysis. The results showed that Ho$$^{3+}$$/Tm$$^{3+}$$/Yb$$^{3+}$$-doped NaGd(MO$$_{4})_{2}$$ has tetragonal phase structures, and doping with rare-earth ions decreases the cell parameters of NaGd(MO$$_{4})_{2}$$. NaGd(MO$$_{4})_{2}$$:Ho$$^{3}$$/Tm$$^{3+}$$/Yb$$^{3+}$$ generates blue, green, and red lights at 477, 545, and 659 nm, respectively, under an excitation of 980 nm. The emission of these three lights is called a three-photon process. As the doping ratio of Yb$$^{3+}$$ increases, the colour coordinates of samples gradually approach the white region from the red region, enabling NaGd(MO$$_{4})_{2}$$:0.1Ho/1Tm/20Yb to exhibit white emission. Doping with Yb$$^{3 + }$$ increases the energy transfer and quantum efficiencies of NaGd(MO$$_{4})_{2}$$. When the concentration of Yb$$^{3+}$$ reached 30%, the quantum efficiency of NaGd(MO$$_{4})_{2}$$ reached the maximum value of 188.37%. Overall, NaGd(MO$$_{4})_{2}$$:Ho/Tm/Yb has broad application prospects in the field of white lighting.

Author Biographies

Zhaoguang Zhang, School of Materials Science and Engineering, Chang'an University, China

Mailing Address:
School of Materials Science and Engineering,
Chang'an University,
Xi'an 710061, China

E-mail: zzg202307@163.com

Kuaile Dang, School of Materials Science and Engineering, Chang'an University, China

Mailing Address:
School of Materials Science and Engineering,
Chang'an University,
Xi'an 710061, China

E-mail: 610372498@qq.com

Huajian Li, School of Materials Science and Engineering, Chang'an University, China

Mailing Address:
School of Materials Science and Engineering,
Chang'an University,
Xi'an 710061, China

E-mail: 2312666016@qq.com

Zeyu Song, School of Materials Science and Engineering, Chang'an University, China

Mailing Address:
School of Materials Science and Engineering,
Chang'an University,
Xi'an 710061, China

E-mail: 1483501778@qq.com

Xiaochen Yu, School of Materials Science and Engineering, Chang'an University, China

Mailing Address:
School of Materials Science and Engineering,
Chang'an University,
Xi'an 710061, China

E-mail: 2456331408@qq.com

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Published

29-01-2024

How to Cite

[1]
Z. Zhang, K. Dang, H. Li, Z. Song, and X. Yu, “Upconversion Luminescence Properties of Ho3+/Tm3+/Yb3+ Co-doped NaGd(MO4)2 Prepared by Hydrothermal Method”, C. R. Acad. Bulg. Sci. , vol. 77, no. 1, pp. 11–19, Jan. 2024.

Issue

Section

Chemistry