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Zn2Si O4︰Tb3+, Zn2 Si O4︰Ce3+, Zn2 Si O4︰Tb3+, Ce3+ phosphors were prepared by solidstate reaction at 1 150 ℃ for 2h under a weak reducing atmosphere. Moreover, the XRD patterns and photoluminescence spectra were recorded and the effects of Tb3+ and Ce3+ concentration on the luminescent properties of as-synthesized phosphors were investigated. The emission spectra under ultraviolet light(333 nm) radiation showed a dominant peak at 542 nm attributed to the 5D4→7F5 transition of Tb3+, which was enhanced significantly(about 45 times) by the co-doping of Ce3+, indicating that there occurred an efficient energy transfer from Ce3+ to Tb3+. According to the Dexter’s energy transfer formula of multipolar interaction, it was demonstrated that the energy transfer between Ce3+ and Tb3+ was due to the electric dipolar-dipolar interaction of the resonance transfer.
Zn2SiO4: Tb3 +, Zn2SiO4: Ce3 +, Zn2SiO4: Tb3 +, Ce3 + phosphors were prepared by solidstate reaction at 1 150 ° C for 2h under a weak reducing atmosphere. Moreover, the XRD patterns and photoluminescence spectra were recorded and the effects of Tb3 + and Ce3 + concentration on the luminescent properties of as-synthesized phosphors were investigated. The emission spectra under ultraviolet light (333 nm) radiation showed a dominant peak at 542 nm attributed to the 5D4 → 7F5 transition of Tb3 +, which was enhanced significantly 45 times) by the co-doping of Ce3 +, indicating that there was an efficient energy transfer from Ce3 + to Tb3 +. According to the Dexter’s energy transfer formula of multipolar interaction, it was demonstrated that the energy transfer between Ce3 + and Tb3 + was due to the electric dipolar-dipolar interaction of the resonance transfer.