Secu Mihail, Secu Corina, Bartha Cristina
National Institute of Materials Physics, 077125 Magurele, Romania.
Materials (Basel). 2021 Nov 14;14(22):6871. doi: 10.3390/ma14226871.
Rare-earth doped oxyfluoride glass ceramics represent a new generation of tailorable optical materials with high potential for optical-related applications such as optical amplifiers, optical waveguides, and white LEDs. Their key features are related to the high transparency and remarkable luminescence properties, while keeping the thermal and chemical advantages of oxide glasses. Sol-gel chemistry offers a flexible synthesis approach with several advantages, such as lower processing temperature, the ability to control the purity and homogeneity of the final materials on a molecular level, and the large compositional flexibility. The review will be focused on optical properties of sol-gel derived nano-glass ceramics related to the RE-doped luminescent nanocrystals (fluorides, chlorides, oxychlorides, etc.) such as photoluminescence, up-conversion luminescence, thermoluminescence and how these properties are influenced by their specific processing, mostly focusing on the findings from our group and similar ones in the literature, along with a discussion of perspectives, potential challenges, and future development directions.
稀土掺杂氟氧化物玻璃陶瓷是新一代可定制的光学材料，在光放大器、光波导和白光发光二极管等光学相关应用方面具有很高的潜力。它们的关键特性与高透明度和显著的发光性能有关，同时保留了氧化物玻璃的热学和化学优势。溶胶-凝胶化学提供了一种灵活的合成方法，具有几个优点，如较低的加工温度、在分子水平上控制最终材料纯度和均匀性的能力以及较大的成分灵活性。本综述将聚焦于溶胶-凝胶法制备的纳米玻璃陶瓷与稀土掺杂发光纳米晶体（氟化物、氯化物、氯氧化物等）相关的光学性质，如光致发光、上转换发光、热释光，以及这些性质如何受到其特定加工过程的影响，主要关注我们团队和文献中类似研究的结果，同时讨论相关前景、潜在挑战和未来发展方向。
