Synthesis and luminescence property of Sr3SiO5:Eu2+ phosphors for white LED

O6; Sr3SiO5:Eu2+ yellow phosphors for white LEDs were synthesized by high temperature solid state reaction method under a reductive atmosphere.The crystalline phases were examined with X-ray diffraction (XRD).Luminescence properties were studied,and effects of various fluxing agents BaCl2,MgF2,CaF2 and BaF2 on the emission spectra were also studied.The optimal Eu2+ concentration and flux were determined.Sr3SiO5:Eu2+ was obtained by firing the sample on optimal composition and fabrication process.The sample showed a broad excitation band from 300 to 500 nm and a broad band emission peaking at 561 nm.