TeO2-ZnO-Na2O-K2O玻璃中Er3+离子掺杂浓度对其发光及荧光寿命的影响

测量了不同掺杂浓度下Er³⁺离子在碲酸盐玻璃中的吸收光谱、发射光谱和Er3+离子的荧光寿命，计算了Er³⁺离子的发射截面σ_e,分析 了Er ³⁺离子掺杂浓度对其发光强度和荧光寿命的影响.结果表明，Er³⁺离子掺 杂浓度较低时，对其荧光强度和荧光寿命没有显著的影响；掺杂浓度高时，出现了浓度猝灭 效应，使Er³⁺离 子荧光光强度降低，荧光寿命下降.实验确定了掺杂浓度最优值，同时对浓度猝灭机制进行 了分析. 关键词： 碲锌碱玻璃 3+离子')" href="#">Er³⁺离子 掺杂浓度 发光和荧光寿命

Influence of concentration of Er3+ ions on luminescence and fluorescence lifetime in TeO2-ZnO-Na2O-K2O glasses

Absorption spectra, emission spectra and fluorescence lifetime of Er³⁺ions were measured for TeO₂-ZnO-Na₂O-K₂O glasses w ith different doping concentrations of Er³⁺ and the emission cross section σ_e of Er³⁺ was calculated. Dependence of luminescence intensity and fluorescence lifetime on concentration of Er³⁺ were analyzed. The influence of concentratio n of Er³⁺ ions on luminescence intensity and fluorescence lifetime was unc onspi cuous in the case of low doping level of Er³⁺. However, high concentr ation of Er³⁺ ions resulted in the concentration quenching, which reduced the l uminescence intensity and fluorescence lifetime. The optimum concentration of Er³⁺ ions was determined for TeO₂-ZnO-Na₂O-K ₂O glasses, and the mechanism of concentration quenching was also discussed and explained in detail.