Abstract The rare earth ions doped glassy materials have become crucial capstone in solid state lighting due to their top-notch optical properties. In this work, Eu3+ doped zinc-tungsten-antimonite glasses with compositions of (60 - x)Sb2O3 − 15WO3 – 25ZnO – xEu2O3 (where x is 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0) were prepared by melt quenching technique. The glasses were prepared with the variation of concentration of Eu3+ ions to achieve superior brightness. The emission intensity increases with the increasing concentration of Eu3+ ions. The prepared glasses exhibit strong hypersensitive red emission at 616 nm due to 5D0 → 7F2 transition under 465 nm excitation wavelength. Along with maximum bright red emission of 3 mol % Eu3+ doped glass also demonstrates high degree of excited state lifetime (556 μs). All these properties strongly validate the bright prospect of these luminescent glasses for utilizing in red LED applications.

中文翻译：

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用于红色 LED 应用的 Eu3+ 掺杂锌钨锑玻璃的光致发光研究

摘要 稀土离子掺杂的玻璃材料由于其一流的光学性能已成为固态照明中至关重要的基石。在这项工作中，通过熔融淬火技术制备了 Eu3+ 掺杂的锌钨锑玻璃，其成分为 (60 - x)Sb2O3 - 15WO3 - 25ZnO - xEu2O3（其中 x 为 0.5、1.0、1.5、2.0、2.5 和 3.0）。玻璃是通过改变 Eu3+ 离子的浓度来制备的，以获得优异的亮度。发射强度随着 Eu3+ 离子浓度的增加而增加。由于在 465 nm 激发波长下 5D0 → 7F2 跃迁，制备的玻璃在 616 nm 处表现出强烈的超敏红色发射。除了 3 mol% Eu3+ 掺杂玻璃的最大亮红色发射外，还表现出高度的激发态寿命 (556 μs)。