Combustion Synthesis and Photoluminescence of Y2Zr2O7:Tb3+ Nano-Phosphors

Abstract:

Y2Zr2O7:Tb3+ nano-phosphors were fabricated by combustion synthesis method using glycine as incendiary agent. X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM) and fluorescence spectrometer were used to characterize the phase structure, surface morphology and luminescence property of Y2Zr2O7:Tb3+ nano-phosphors. The results show that the prepared samples have uniform crystallinity and fine crystalline, with a cubic fluorite structure. Typical Tb3+ emission peaks were observed in the fluorescence spectra and the strongest emission at about 542 nm with green color corresponded to the 5D4--→7F5 transition. The doping concentration of Tb3+ was in the range of 0.5%-6%, with the optimum of 3%.

Key words:Y2Zr2O7:Tb3+ nano-phosphors; combustion synthesis; photoluminescence