The photoluminescence of Sr2CeO4 phosphor prepared by modified citrate-gel method

In this paper, blue-emitting Sr₂CeO₄ powders were synthesized by modified citrate-gel process using corresponding metal carbonates, citrate acid and ammonium nitrate as raw materials. The luminescent properties of the samples were investigated by fluorescence spectrophotometer. The results show that the excitation and emission spectra of the. as-prepared Sr₂CeO₄ phosphors show broad bands, and that a small amount of NH₄NO₃ and appropriate sintering temperature are benefit to the gain of the Sr₂CeO₄ phosphor with high luminescent intensity.