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

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    • 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



      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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