Luminescence and preparation of Dy2O3 doped SrCO3–WO3–SiO2 glass ceramics

Abstract In this paper, Dy3+ doped SrCO3–WO3–SiO2 glass ceramics are successfully prepared by melt-quenching method. The microscopic morphology, structure and luminescence properties of Dy3+ doped glass ceramics are investigated through XRD, DSC, SEM, photoluminescence spectra and decay curves etc. It can be determined that the crystalline phase is SrWO4 after comparing with PDF normal card by XRD. Also, combining with the transmission curves, the optimum heat treatment temperature and time are 740 °C/1.5 h. In the emission spectrum, there are three obvious emission peaks at 484 nm, 575 nm and 665 nm, respectively. The optimum concentration of Dy3+ is found to be 1.6 mol, and electric multipole interaction is the main reason for the concentration quenching. The maximum fluorescence lifetime is 796.5 μs.