Preparation and synthesis of luminescent materials has a special interest in medicine, industry and research due to the wide variety of applications offered by phosphors. In this study, pellets of a mixture of CaF₂ and Tm₂O₃ which were pressed and thermally treated up to 600 °C were prepared in air. Combined SEM (scanning electron microscopy), EDX (energy dispersive X-ray analysis) and CL-RGB (cathodoluminescence red-green-blue) microanalysis and, complementarily spectral CL analysis of this phosphor were performed. EDX analysis showed that the activator was homogeneously distributed in the prepared specimens. The additional CL emission can be attributed to the properties of some luminescent centers that were apparently created during the annealing. In addition, it seems that other trapping centers were created by new structural defects during the preparation process in the CaF₂ lattice. The combined techniques SEM/EDX/CL-RGB have confirmed their capabilities in the characterization of the prepared materials. This contribution provides a process and characterization methods used in the fabrication and characterization of a phosphor that can also be used to optimize the luminescent emission of other similar synthetic materials with rare earth oxides as activators.

由于荧光粉提供的广泛应用，发光材料的制备和合成在医学、工业和研究中具有特殊的意义。在本研究中，CaF ₂和 Tm ₂ O ₃混合物的颗粒在空气中进行压制和热处理至 600 °C。对该磷光体进行了组合 SEM（扫描电子显微镜）、EDX（能量色散 X 射线分析）和 CL-RGB（阴极发光红-绿-蓝）微量分析以及互补光谱 CL 分析。EDX 分析表明活化剂均匀分布在制备的样品中。额外的 CL 发射可归因于在退火过程中明显产生的一些发光中心的特性。此外，在 CaF ₂的制备过程中，似乎其他捕获中心是由新的结构缺陷造成的。格子。SEM/EDX/CL-RGB 组合技术已经证实了它们在表征所制备材料方面的能力。该贡献提供了用于制造和表征磷光体的工艺和表征方法，该磷光体也可用于优化以稀土氧化物作为活化剂的其他类似合成材料的发光发射。