Abstract
We presented the energy transfer from Ce 3+ to Eu 2+ in CaAl 2Si 2O 8 host. The Ce 3+-doped CaAl 2Si 2O 8 phosphor had a strong emission band at 378 nm under the vacuum ultraviolet (VUV) light. This emission spectrum of Ce 3+ well overlapped with the excitation spectrum of Eu 2+ under the UV illumination. As a result, the energy transfer from Ce 3+ to Eu 2+ in CaAl 2Si 2O 8 matrix was observed under VUV excitation, which resulted in a significant enhancement of the emission peak intensity at 446 nm. More details about the luminescent properties were presented.
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