An Eu 3+ activated strontium silicate phosphor was synthesized using a microwave-assisted sintering with a flux NH 4 Cl. X-ray powder diffraction analysis confirmed the formation of pure Sr 2 SiO 4 phase without second phase or phases of starting materials as Sr 1.9 SiO 4 :Eu 3+ 0.1 powders sintered at various temperatures in microwave furnace for 1h. Scanning electron microscopy showed smaller particle size and more uniform grain size distributions are obtained by microwave-assisted sintering. In the PL studies, the excitation spectrum of Sr 1.9 SiO 4 :Eu 3+ 0.1 phosphors exhibited a broad band in the UV region centered at about 270nm which was consistent with the absorption spectra. Both microwave sintered and conventionally sintered powders emitted a maximum luminescence centered at 617nm under excitation of 395nm, with similar luminescent intensity. The results showed that microwave processing has the potential to decrease the sintering time and required energy input for the production of Sr 1.9 SiO 4 :Eu 3+ 0.1 phosphors without degrading photoluminescence.