Abstract
The white emission phosphor Ca3Sc2Si3O12:Dy3+ was synthesized by the solid-state reaction. Phase analysis and characteristic luminescence properties are investigated by X-ray diffraction and photoluminescence spectra measurement. Ca3Sc2Si3O12:Dy3+ phosphor shows strong absorption in 350–410nm 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 Ca3Sc2Si3O12:Dy3+ is superior than that of commercial phosphor Ca3Sc2Si3O12:Ce3+. The outstanding luminescent properties indicate that Ca3Sc2Si3O12:Dy3+ could be a potential white light emission phosphor.
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