In the present work, CaP₄O₁₁ was explored as a host material of phosphors for solid-state lighting applications for the first time. This ultraphosphate compound doped with Eu³⁺ ions was prepared via the solid-state reaction in air atmosphere. The photoluminescence properties were investigated under (UV) ray excitation. From a powder X-ray diffraction analysis, structural Rietveld refinement and IR/Raman spectroscopy, the formation of single phase CaP₄O₁₁ with a monoclinic structure was confirmed. The spectral distribution of the Eu³⁺ -doped CaP₄O₁₁ ultraphosphate results in an overall orange-red emission due to the non-negligible intensity of the ⁵D₀→⁷F₁ transition. One Eu³⁺ center was attributed according to the crystal structure and the luminescence characteristics. The luminescence decay curve of CaP₄O₁₁:Eu³⁺ was fitted into a single exponential function and the lifetime was about 3.8 ms. The obtained CaP₄O₁₁:Eu³⁺ phosphors may have a potential application for solid state lighting based on light emitting diodes technology.

在目前的工作中，CaP ₄ O ₁₁首次被用作固态照明应用的磷光体基质材料。经由Eu ³⁺离子掺杂的该超磷酸盐化合物通过在大气中的固态反应来制备。在（UV）射线激发下研究了光致发光性质。通过粉末X射线衍射分析，结构Rietveld精制和IR /拉曼光谱，证实了具有单斜晶结构的单相CaP ₄ O ₁₁的形成。Eu ³⁺掺杂CaP ₄ O ₁₁的光谱分布由于⁵ D ₀ → ⁷ F ₁跃迁的强度不可忽略，因此超磷酸盐导致整体橙红色发射。根据晶体结构和发光特性归因于一个Eu ³⁺中心。将CaP ₄ O ₁₁：Eu ³⁺的发光衰减曲线拟合为一个指数函数，寿命约为3.8 ms。所获得的CaP ₄ O ₁₁：Eu ³⁺荧光粉可能具有基于发光二极管技术的固态照明的潜在应用。