Highly ${\mathrm{Eu}}_2{\mathrm{O}}_3$-doped (up to 30 mol%) La₂O₃–Ga₂O₃ glasses were synthesized by an aerodynamic levitation technique. The red emission associated with ${}^5{D}_0$ level of ${\mathrm{Eu}}^{3+}$was most intense at 20 mol% ${\mathrm{Eu}}_2{\mathrm{O}}_3$, indicating a small effect of concentration quenching even at high Eu concentration. The fluorescence decay curves indicated that the dominant transition mechanism at high Eu concentration was fast energy migration among the ${\mathrm{Eu}}^{3+}$ ions, which averaged the environment of the Eu, yielding a nearly single-exponential decay of ${}^5{D}_0\to {}^7{F}_2$ emission. Lifetime of the ${}^5{D}_0$ level gradually decreased with ${\mathrm{Eu}}_2{\mathrm{O}}_3$ over the 5–25 mol% and rapidly decreased at 30 mol%, very consistent with the observed emission spectra.

中文翻译：

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高猝灭浓度重掺杂Eu ^3+的没食子酸镧镧玻璃球的荧光表征

高度 ${\mathrm{欧盟}}_{\mathrm{2个}}{\mathrm{Ø}}_3$通过空气悬浮技术合成了掺杂（最多30 mol％）的La ₂ O ₃ -Ga ₂ O ₃玻璃。与之相关的红色发射${}^5{d}_0$ 水平 ${\mathrm{欧盟}}^{3+}$在20摩尔％时最强烈 ${\mathrm{欧盟}}_{\mathrm{2个}}{\mathrm{Ø}}_3$，表明即使在高Eu浓度下，浓度淬灭的影响也很小。荧光衰减曲线表明，高Eu浓度下的显着跃迁机理是能量的快速迁移。${\mathrm{欧盟}}^{3+}$ 离子，平均Eu的环境，产生几乎单指数的Eu衰变。 ${}^5{d}_0\to {}^7{F}_{\mathrm{2个}}$排放。的生命周期${}^5{d}_0$ 逐渐降低 ${\mathrm{欧盟}}_{\mathrm{2个}}{\mathrm{Ø}}_3$ 在5–25 mol％范围内，并且在30 mol％时迅速降低，这与观察到的发射光谱非常一致。