Solid state reaction synthesis and photoluminescence properties of Dy3+ doped Ca3Sc2Si3O12 phosphor

Abstract The white emission phosphor Ca 3 Sc 2 Si 3 O 12 :Dy 3+ was synthesized by the solid-state reaction. Phase analysis and characteristic luminescence properties are investigated by X-ray diffraction and photoluminescence spectra measurement. Ca 3 Sc 2 Si 3 O 12 :Dy 3+ phosphor shows strong absorption in 350–410 nm region and exhibits white emission with CIE chromaticity coordinates of (0.3425, 0.3343). Its emission intensity at 250 °C remained 74% of that measured at room temperature. Moreover, the activation energy is also calculated through the Arrhenius equation. The result shows that the thermostability of Ca 3 Sc 2 Si 3 O 12 :Dy 3+ is superior than that of commercial phosphor Ca 3 Sc 2 Si 3 O 12 :Ce 3+ . The outstanding luminescent properties indicate that Ca 3 Sc 2 Si 3 O 12 :Dy 3+ could be a potential white light emission phosphor.