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用高温固相反应法合成了发光材料、研究了Tb~(3+)在La_2Na_2Sr_6(PO_4)_6Br_2基质中的光致发光性质及Ce~(3+)对Tb~(3+)的敏化作用.在254nm紫外光激发下,Tb~(3+)的发光较弱,但Ce~(3+)对Tb~(3+)有强的敏化作用,其能量传递机埋是偶极-偶极相互作用引起的共振能量传递,计算了传递效率。
The photoluminescence properties of Tb 3+ in La_2Na_2Sr_6 (PO_4) _6Br_2 matrix and the sensitization of Tb ~ (3+) to Ce ~ (3+) were studied by solid-state reaction at high temperature. The luminescence of Tb 3+ is weaker than that of Tb 3+ at 254 nm, but the sensitization of Ce 3+ to Tb 3+ is strong. The energy transfer of Tb 3+ is dipole- The resonance energy transfer caused by the extreme interaction is calculated and the transfer efficiency is calculated.