• QI WANG

      Articles written in Bulletin of Materials Science

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

      RONG HUANG QI WANG JINSHENG LIAO WEIXIONG YOU

      More Details Abstract Fulltext PDF

      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.

  • Bulletin of Materials Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.