Synthesis of Mg_2SiO_4:Eu~(3+) by combustion method and investigating its luminescence properties

摘要

In this study, nanocrystalline forsterite (Mg_2SiO_4) powder was synthesized via two-step combustion-cal-cination procedure. Mixtures of citric acid and glycine were used as fuel and nitrate ions were used as oxidizers. The samples were synthesized with different fuel to nitrate (F/N) molar ratios. The synthesized sample was characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy and photoluminescence spectroscopy. The effect of fuels on formation of the forsterite phase was studied. The X-ray diffraction (XRD) patterns of the samples revealed that the forsterite was formed as a major phase for all the samples containing citric acid. The crystallite size was found to be in the range of 18-50 nm. Photoluminescence spectra showed that the luminescent intensity of Mg_2SiO_4:Eu~(3+) parti-cles were much higher than that of MgO:Eu~(3+) ones.