Photoluminescence properties of Eu2+-activated Sr3SiO5 phosphors

The photoluminescence of an Eu+3 activated Sr 3SiO5 compound was investigated. All samples were prepared using conventional solid-state reaction method. Stoichiometric amounts of SrCO3, SiO2, and Eu2O3 powders were mixed in acetone in an agate mortar and dried to 130 °Celsius for 24 hr to evaporate the solvent and successively heat-treated at several temperature conditions, followed by an additional grinding and firing in a reduction atmosphere. The obtained powder samples were confirmed to be single phase by a RIGAKU D/MAX-2200V X-ray diffraction (XRD) system with CuKα radiation and a diffracted beam graphite monochromator. The excitation and emission spectra of the fired samples were measured using a Perkn-Elmer LS-50 luminescence spectrometer with a xenon flash lamp.