Abstract

In the present study Eu₂O₃ doped Li₂O–Si₂O–B₂O₃ glasses (LSBE) were synthesized by the melt quench technique. The physical, thermal, and spectroscopic properties of prepared glasses by various techniques have been investigated in this work. The powder X-ray diffraction study confirms the amorphous nature of glass samples. The various absorption bands assigned were observed from ground level ⁷F₀ to various excited states within the 4f shell. Emission spectra exhibit bands in the visible region from 450 to 750 nm. The spectra show some sharp peaks belongs to 4f electronic transitions of Eu³⁺ ion at ⁵D₀ → ⁷F₀ (578 nm), ⁵D₀ → ⁷F₁ (590 nm), ⁵D₀ → ⁷F₂ (614 nm), ⁵D₀ → ⁷F₃ (652 nm), and ⁵D₀ → ⁷F₄ (701 nm). The band at 614 nm corresponds to ⁵D₀ →⁷F₂ transition is hypersensitive among all bands. From the CIE chromaticity diagram, the glass sample LSBE-5 shows the highest emission intensity with color coordinates x = 0.56, y = 0.33 among all glass samples.

中文翻译：

---

用于 LED 应用的 Eu3+ 掺杂硅硼酸锂玻璃

摘要

在本研究中，Eu ₂ O ₃掺杂的 Li ₂ O-Si ₂ O-B ₂ O ₃玻璃（LSBE）是通过熔体淬火技术合成的。在这项工作中已经研究了通过各种技术制备的玻璃的物理、热和光谱特性。粉末 X 射线衍射研究证实了玻璃样品的无定形性质。从地平面⁷ F ₀到 4 f壳内的各种激发态，观察到分配的各种吸收带。发射光谱在 450 到 750 nm 的可见光区显示出波段。光谱显示一些尖峰属于 4 fEu ³⁺离子在⁵ D ₀ → ⁷ F ₀ (578 nm)、⁵ D ₀  →  ⁷ F ₁ (590 nm)、⁵ D ₀ → ⁷ F ₂ (614 nm)、⁵ D ₀ → ⁷ F处的电子跃迁₃ (652 nm) 和⁵ D ₀ → ⁷ F ₄ (701 nm)。614 nm 处的波段对应于⁵ D ₀ → ⁷ F ₂过渡在所有波段中都非常敏感。从 CIE 色度图中，玻璃样品 LSBE-5 显示出最高的发射强度，色坐标x = 0.56，y = 0.33 在所有玻璃样品中。