Abstract We report the luminescence and energy transfer features in (B2O3)0.55-x(Li2O)0.30 (MgO)0.10(Gd2O3)0.05 (Sm2O3)x glasses, prepared via melt-quenching rout. By employing the Judd–Ofelt (JO) theory, the spectral parameters such as oscillator strengths, stimulated emission cross-sections, radiative transition probability and branching ratios are evaluated from the absorption and emission spectra. The dipole-dipole interaction as a dominant interaction mechanism is confirmed from Inokuti–Hirayama (IH) model. The luminescent color falls in the orange part of commission International de I'Eclaiage (CIE). The ultra-violet (UV) sensitization of visible emission of Sm3+ is analyzed by the photoluminescence (PL) emission spectra and the lifetime measurement. The Gd: 6P7/2–8S7/2 emission in UV range and the Sm3+:4G5/2 –6HJ luminescence at 598 nm were observed upon the excitation of Gd:4f level by λexc = 275 nm. Moreover, the impact of energy transfer on the donor-acceptor luminescence, quantum efficiency, and donor luminescence decay kinetics are investigated. It is found that efficient orange luminescence originates from Sm3+ emitting centers. These findings show that these as-prepared luminescent glasses are promising in orange LEDs and laser applications.

中文翻译：

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固态照明材料用硼酸锂钆镁的Gd3+/Sm3+能量转移行为及光谱研究

摘要 我们报告了 (B2O3)0.55-x(Li2O)0.30 (MgO)0.10(Gd2O3)0.05 (Sm2O3)x 玻璃的发光和能量转移特征，玻璃是通过熔融淬火工艺制备的。通过采用 Judd-Ofelt (JO) 理论，可以从吸收和发射光谱评估光谱参数，例如振荡器强度、受激发射截面、辐射跃迁概率和分支比。Inokuti-Hirayama (IH) 模型证实了偶极-偶极相互作用作为主要相互作用机制。发光颜色落在委员会国际 de I'Eclaiage (CIE) 的橙色部分。通过光致发光 (PL) 发射光谱和寿命测量来分析 Sm3+ 的可见光发射的紫外线 (UV) 敏化。紫外范围内的 Gd: 6P7/2–8S7/2 发射和 Sm3+：在 λexc = 275 nm 激发 Gd:4f 能级时，观察到 598 nm 处的 4G5/2 –6HJ 发光。此外，研究了能量转移对供体-受体发光、量子效率和供体发光衰减动力学的影响。发现有效的橙色发光源自 Sm3+ 发射中心。这些发现表明，这些制备的发光玻璃在橙色 LED 和激光应用中很有前景。