A novel red phosphor Na2Ca4Mg2Si4O15:Eu3+ for plasma display panels

Abstract A novel red emitting phosphor, Eu 3+ -doped Na 2 Ca 4 Mg 2 Si 4 O 15 , was prepared by the solid-state reaction. X-ray powder diffraction (XRD) analysis confirmed the formation of Na 2 Ca 4 Mg 2 Si 4 O 15 :Eu 3+ . Field-emission scanning electron-microscopy (FE-SEM) observation indicated a narrow size-distribution of about 300 nm for the particles with spherical shape. Upon excitation with vacuum ultraviolet (VUV) and near UV light, the phosphor showed strong red-emission lines at around 611 and 617 nm, respectively, corresponding to the forced electric dipole 5 D 0 → 7 F 2 transition of Eu 3+ , and the highest PL intensity at 617 nm was found at a content of about 8 mol% Eu 3+ . The optical properties study suggests that it is a potential candidate for plasma display panels (PDPs) application.