• Microwave hydrothermal synthesis and upconversion luminescence properties of Yb$^{3+}$/Tm$^{3+}$ co-doped NaY(MoO$_4$)$_2$ phosphor

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      https://www.ias.ac.in/article/fulltext/boms/040/07/1447-1453

    • Keywords

       

      NaY(MoO$_4$)$_2$:Yb$^{3+}$/Tm$^{3+}$; upconversion luminescence; microwave hydrothermal synthesis.

    • Abstract

       

      Tetragonal NaY(MoO$_4$)$_2$ (NYM) phosphors co-doped with Yb$^{3+}$ and Tm$^{3+}$ ions were synthesized throughmicrowave hydrothermal method followed by calcining treatment. Powder X-ray diffraction, Fourier transform infraredspectroscopy, scanning electron microscopy and photoluminescence spectra were used to characterize the properties of as prepared samples. The results show that Yb$^{3+}$/Tm$^{3+}$ co-doped NYM displayed bright blue emission near 472 and 476 nm(${}^1$G$_4$ $\to$ ${}^3$H$_6$ transition), strong near-infrared upconversion (UC) emission around 795 nm (${}^3$H)$_4$ $\to$ ${}^3$H$_6$ transition). The optimum doping concentrations of Yb$^{3+}$ and Tm$^{3+}$ for the most intense UC luminescence were obtained, and the related UC mechanism of Yb$^{3+}$/Tm$^{3+}$ co-doped NYM depending on pump power was studied in detail.

    • Author Affiliations

       

      RONG HUANG1 QI WANG2 JINSHENG LIAO2 WEIXIONG YOU2

      1. Department of Biochemistry, Ganzhou Teachers College, Ganzhou 341000, China
      2. School of Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, and Center for Rare-Earth Optoelectronic Materials, Ganzhou 341000, China
    • Dates

       
  • Bulletin of Materials Science | News

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