Abstract
A novel Ce3+/Eu2+ co-activated Ba3Si6O12N2 phosphor has been synthesized by traditional solid-state reaction. The samples could display varied color emissions from blue and ultimately to green under the excitation of ultraviolet (UV) light or blue light with the appropriate adjustment of the relative proportion of Ce3+/Eu2+. It was found that the luminescence intensity of the Ba3Si6O12N2:Eu2+ phosphors can be efficiently enhanced by co-doping with Ce3+. The resonance-type energy transfer mechanism from Ce3+ to Eu2+ in Ba3Si6O12N2:Ce3+, Eu2+ phosphors is dominant by electric dipole–dipole interaction, and the critical distance is calculated to be about 25.11Å by the spectra overlapping method. The Ba3Si6O12N2:Ce3+, Eu2+ phosphor has potential application as a phosphor for white light-emitting diodes.
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