Recent developments in nanocomposites have attracted the interest of researchers in synthesizing nanocomposite-based photoluminescent materials. Lanthanides have been studied extensively as photoluminescent materials especially the Europium, owing to their simple energy level diagram, long luminescence lifetime, high emission quantum yield, and narrow emission bands in the visible region. The major limitation of using Europium for its practical application as a luminescent material is its low absorption coefficient that prevents the direct excitation of the Eu³⁺ ions. To improve the absorption, Europium has been doped with Y₂O₃ due to its similar energy level scheme i.e., 5D₂ and 5L₆. In our work, we have prepared Europium doped Y₂O₃:TiO₂ nanocomposite and investigated its structural, morphological, and optical properties using characterization tools such as X-ray Diffraction (XRD), Scanning electron microscopy (SEM), High resolution transmission electron spectroscopy (HRTEM), Fourier transform infrared spectroscopy (FTIR), Energy dispersive X-ray spectroscopy (EDS), Elemental mapping, UV–vis-IR, and Photoluminescence (PL) spectroscopy. The material showed good optical properties and its application as a thermographic phosphor is studied via coating a NUV-LED and observing the change in intensity with varying temperature under UV irradiation. The material can be used as a thermographic phosphor and even for the LED fabrication.

纳米复合材料的最新发展吸引了研究人员对合成基于纳米复合材料的光致发光材料的兴趣。镧系元素由于其简单的能级图，长的发光寿命，高的发射量子产率以及在可见光区域的窄的发射带而被广泛地研究作为光致发光材料，尤其是the。在实际应用中使用application作为发光材料的主要限制是其吸收系数低，从而阻止了Eu ³⁺离子的直接激发。为了提高吸收率，Euro由于其相似的能级方案即5D ₂和5L ₆掺入了Y ₂ O _3。。在我们的工作中，我们制备了Euro掺杂的Y ₂ O ₃：TiO ₂纳米复合材料，并使用表征工具（例如X射线衍射（XRD），扫描电子显微镜（SEM），高分辨率透射率）研究了其结构，形态和光学性质。电子光谱（HRTEM），傅立叶变换红外光谱（FTIR），能量色散X射线光谱（EDS），元素图谱，UV-vis-IR和光致发光（PL）光谱。该材料显示出良好的光学性能，并通过涂覆NUV-LED并观察UV辐射下随温度变化的强度变化，研究了其作为热敏荧光粉的应用。该材料可以用作热成像荧光粉，甚至可以用于LED制造。