In this paper, the structural and luminescence properties of Eu³⁺- doped SrAl₁₂O₁₉ nanophosphors are discussed. A series of SrAl₁₂O₁₉:xEu³⁺ (x = 0.5, 1, 1.5, 2 and 2.5 mol %) nanophosphors were prepared using urea assisted-combustion synthesis method. The elemental and phase identification were performed by X-ray diffraction. The peak positions in the X-ray diffraction pattern have confirmed the formation of hexagonal structure. The vibration of oxide bonds and the formation of the molecules were confirmed from FTIR spectra. The surface morphology and particle size distribution are estimated using Field Emission-Scanning Electron Microscopy (FE-SEM), High Resolution-Transmission Electron Microscopy (HR-TEM). The optical properties of prepared nanophosphors series are studied using photoluminescence spectra and UV–visible spectra analysis. The refractive index of the optimized concentration of nanophosphor is estimated using Herve and Vandamme relation. Further, Judd-Ofelt analysis was performed on photoluminescence emission spectra. The potential application of synthesized nanophosphors in light-emitting devices (LED) is verified using photometry analysis on obtained emission spectra. The obtained CCT number confirmed that these phosphors are useful as a red color LED.

在本文中，讨论了Eu ³⁺ - 掺杂的SrAl ₁₂ O ₁₉纳米磷光体的结构和发光特性。一系列 SrAl ₁₂ O ₁₉ :xEu ³⁺(x = 0.5, 1, 1.5, 2 and 2.5 mol %) 纳米磷光体使用尿素辅助燃烧合成方法制备。通过X射线衍射进行元素和相鉴定。X 射线衍射图中的峰位置证实了六边形结构的形成。FTIR 光谱证实了氧化物键的振动和分子的形成。使用场发射扫描电子显微镜 (FE-SEM)、高分辨率透射电子显微镜 (HR-TEM) 估计表面形态和粒度分布。使用光致发光光谱和紫外-可见光谱分析研究了制备的纳米磷光体系列的光学性质。使用 Herve 和 Vandamme 关系估计优化浓度的纳米磷光体的折射率。更远，对光致发光发射光谱进行 Judd-Ofelt 分析。合成纳米磷光体在发光器件 (LED) 中的潜在应用通过对获得的发射光谱的光度分析来验证。获得的 CCT 值证实这些磷光体可用作红色 LED。