| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1461012 | Ceramics International | 2014 | 7 Pages |
A series of single-phased emission Ce3+/Tb3+-coactivated KSrY(PO4)2 (KSYP) phosphors were synthesized by solid-state reaction. The crystal structures, photoluminescence properties, fluorescence lifetimes and energy transfer of KSYP:Ce3+, Tb3+ were systematically investigated in detail. Wavelength-tunable bluish-green light could be realized by coupling the emission bands centered at 401 and 543 nm ascribed to the contribution from Ce3+ and Tb3+, respectively. Intense green emission was realized in the KSrY0.59(PO4)2:0.01 mol Ce3+, 0.40 mol Tb3+ phosphors on the basis of the high efficiency energy transfer from Ce3+ to Tb3+ with an efficiency of over 68%. The energy transfer mechanism from Ce3+ to Tb3+ in the KSYP host was ascribed to the exchange interaction. These results indicated that the KSYP:Ce3+, Tb3+ phosphors have potential applications in the field of lighting and display due to their effective excitation in the ultraviolet range.
