Abstract Dysprosium-doped fluorophosphate glasses (P2O5–CaF2–BaF2–TiO2-Dy2O3) have been prepared using melt-quenching technique and characterized their optical, structural, thermal and photoluminescence properties. Thermal stability (128 °C) of 0.5 mol% Dy2O3-doped glass has been estimated using Differential thermal analysis. Functional groups for 0.5 mol% Dy2O3-doped glass have been studied by Fourier Transform Infrared spectrum. Absorption spectra have been utilized for estimating the Judd-Ofelt (JO) parameters and allied properties. Several excitation wavelengths (350, 365, 387, 425, 452 and 472 nm) have been used for pumping the Dy3+ ions and analyzed for white luminescence. Intense emission has been observed for 0.5 and 1.5mol% of Dy2O3-doped glasses under 387 nm excitation. The 4F9/2 → 6H13/2 transition at 573 nm has unveiled a high stimulated emission cross-section (σSE) of 41.52 × 10−22 cm2 for 0.5 mol% Dy2O3-doped glass. CIE coordinates fall close to the white region in CIE diagram, and hence these glasses are suitable for cold white light emitting diode applications.

中文翻译：

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激发波长和掺杂浓度对镝掺杂二氧化钛-氟磷酸盐玻璃白光可调性的影响

摘要 镝掺杂的氟磷酸盐玻璃 (P2O5–CaF2–BaF2–TiO2-Dy2O3) 已使用熔融淬火技术制备，并表征了它们的光学、结构、热和光致发光特性。已使用差热分析评估了 0.5 mol% Dy2O3 掺杂玻璃的热稳定性 (128 °C)。已通过傅立叶变换红外光谱研究了 0.5 mol% Dy2O3 掺杂玻璃的官能团。吸收光谱已用于估计 Judd-Ofelt (JO) 参数和相关特性。几种激发波长（350、365、387、425、452 和 472 nm）已用于泵送 Dy3+ 离子并分析白光。在 387 nm 激发下，已观察到 0.5 和 1.5 摩尔％的 Dy2O3 掺杂玻璃的强发射。573 nm 处的 4F9/2 → 6H13/2 跃迁揭示了 0.5 mol% Dy2O3 掺杂玻璃的高受激发射截面 (σSE) 为 41.52 × 10−22 cm2。CIE坐标接近CIE图中的白色区域，因此这些玻璃适用于冷白光发光二极管应用。