Article ID Journal Published Year Pages File Type
1524648 Materials Chemistry and Physics 2011 5 Pages PDF
Abstract

A white-emitting Ca9Y(PO4)7: Tm3+, Dy3+ phosphor has been successfully prepared by conventional high-temperature solid-state reaction. X-ray diffraction (XRD) and fluorescence spectrophotometer were used to characterize the as-synthesized phosphors. The excitation and emission spectra show that all the Tm3+ and Dy3+ co-doped Ca9Y(PO4)7 samples can be effectively excited by UV light and then emit blue and yellow light simultaneously. Furthermore, the emission and color coordinate of as-obtained samples pumped by 365 nm are able to be adjusted around white light by varying the doping concentrations of Tm3+ and Dy3+. So, the as-fabricated single-composition Ca9Y(PO4)7: Tm3+, Dy3+ phosphor will have a promising application in the area of white light emitting diodes.

► White-emitting Ca9Y(PO4)7: Tm3+, Dy3+ has been prepared by solid-state reaction. ► All as-obtained samples can be effectively excited by UV light. ► Doping content of Tm3+ and Dy3+ has a great effect in luminescence properties. ► Emission and color coordinate of samples are able to be tuned around white light.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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