Luminescent silica-based glass-ceramics (GCs) embedded with YOF:Eu³⁺ nanocrystals (NCs) were prepared by Spark Plasma Sintering at a relatively low temperature (980 °C) within 10 min. XRD data and TEM images clearly confirmed the presence of highly crystallized tetragonal YOF:Eu³⁺ NCs in the amorphous silica glass matrix without obviously interfacial reaction. The GC samples showed typical intense reddish-orange emission, which can be ascribed to the ⁵D₀→⁷F_j transitions of Eu³⁺, upon excitation of 393 nm. Additionally, a small PL intensity ratio of ⁵D₀→⁷F₂/⁵D₀→⁷F₁ revealed that majority of Eu³⁺ ions are well retained in YOF NCs after sintering, which was further verified by the Judd-Ofelt parameters. The lifetime of GC sample was well fitted by a single exponential function and calculated to be 1.086 ms, which was similar to that of as-synthesized YOF:Eu³⁺ NCs (1.104 ms). Hence, these results demonstrated that YOF:Eu³⁺ NCs were well protected via this fabrication method of GC composites, guaranteeing high optical performance.

嵌入了 YOF:Eu ³⁺纳米晶体 (NC) 的发光二氧化硅基玻璃陶瓷 (GC)是通过火花等离子体烧结在相对较低的温度 (980 °C) 下在 10 分钟内制备的。XRD 数据和 TEM 图像清楚地证实了无明显界面反应的无定形二氧化硅玻璃基质中存在高度结晶的四方 YOF:Eu ³⁺ NC。GC 样品显示出典型的强烈红橙色发射，这可以归因于Eu ³⁺的⁵ D ₀ → ⁷ F _j跃迁，在 393 nm 激发下。此外，⁵ D ₀ → ⁷ F ₂的小PL强度比/ ⁵ D ₀ → ⁷ F ₁表明大部分 Eu ³⁺离子在烧结后被很好地保留在 YOF NCs 中，这由 Judd-Ofelt 参数进一步验证。GC 样品的寿命由单个指数函数很好地拟合，计算为 1.086 ms，与合成后的 YOF:Eu ³⁺ NCs (1.104 ms)相似。因此，这些结果表明 YOF:Eu ³⁺ NCs 通过这种 GC 复合材料的制造方法得到了很好的保护，保证了高光学性能。