Synthesis of Ca2 ZnSi2O7:Eu phosphor by a modified solid-state reaction and its luminescent properties

摘要

This paper reports the detailed preparation and phosphorescence properties of Eu2+-activated Ca2 ZnSi2O7 phosphors by a modified solid-state reaction. Phase-pure crystalline Ca2ZnSi2O7 is obtained at 600℃, a much lower temperature than by conventional solid-state reaction and the preparation process of Ca2ZnSi2O7 is simple. The obtained phosphors showed three emission peaks at 480,580 and 620 nm,respectively. Auxiliary activator R3+(R=Dy, Nd, Tm) would enhance their luminescent properties.