Glass ceramics with GdVO₄: Tb nanocrystals impregnated in the highly transparent silica glass were prepared by the porous glass and sintering process and confirmed by XRD, Raman spectrum, and TEM. Spectral analysis shows that there are multifarious energy transfer processes in GdVO₄: Tb nanocrystals, such as VO₄³⁻ → Tb³⁺, Gd³⁺ → VO₄³⁻, Gd³⁺ → VO₄³⁻ → Tb³⁺, and Gd³⁺ → Tb³⁺, and the main one is VO₄³⁻ → Tb³⁺. In this process, ³T_1,2 → ¹A₁ transition of VO₄³⁻ transfers the energy to Tb³⁺ and generates ⁵D₃ → ⁷F_6,5,4,3,2 and ⁵D₄ → ⁷F₅ transitions of Tb³⁺. The energy transfer efficiency is 29.5%, and the excitation wavelength range of Tb³⁺ ions can be shifted from 230–260 nm to 280–365 nm. This shows that GdVO₄ can effectively change the excitation wavelength of Tb³⁺, which is conducive to the application of Tb³⁺ ions excited by LED light sources.

中文翻译：

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GdVO4：Tb纳米晶体在石英玻璃陶瓷中的发光行为

通过多孔玻璃和烧结工艺，制备了在高透明石英玻璃中浸渍了GdVO ₄：Tb纳米晶体的玻璃陶瓷，并通过XRD，拉曼光谱和TEM进行了确认。光谱分析表明，GdVO ₄：Tb纳米晶体中存在多种能量转移过程，例如VO ₄ ³⁻ →Tb ³⁺，Gd ³⁺ →VO ₄ ^3-，Gd ³⁺ →VO ₄ ³⁻ →Tb ³⁺， Gd ³⁺ →Tb ³⁺，主要的是VO ₄ ³⁻ →Tb ³⁺。在这个过程中，³ T_1,2 → ¹ A ₁ VO ₄ ^3−的跃迁将能量转移到Tb ³⁺并生成⁵ D ₃ → ⁷ F _6,5,4,3,2和⁵ D ₄ → ⁷ F ₅ Tb ^3+的跃迁。能量转移效率为29.5％，Tb ³⁺离子的激发波长范围可以从230–260 nm转换为280–365 nm。这表明GdVO ₄可以有效改变Tb ³⁺的激发波长，有利于Tb ³⁺的应用。 LED光源激发的离子。