This study presents the photoluminescence characteristic analysis of a series of red phosphors of KAlSiO₄:1.5 mol%Sm³⁺,x mol%Eu³⁺ (x = 2, 3, 4, 5, 6, 7) prepared via high-temperature solid-phase reaction. The results show that the X-ray diffraction (XRD) refinement results are reliable. The unit cell parameters and volume gradually decrease as the Eu³⁺ concentration increases, resulting in a grain size reduction of 10.22%. When x = 6, the emission peaks of Sm³⁺ at 564, 601, and 651 nm disappear completely, and the corresponding full width at half maximum becomes 0. At 610 nm, the emission peak intensity of Eu³⁺ is increased by a factor of 4.8. The resonant non-radiative energy transfer effect is greater than the co-excitation effect. A maximum energy transfer efficiency of 97.8% is achieved. The integral area at 610 nm is as high as 85%. The color purity of the phosphor is as high as 92.97%, and the internal quantum yield gradually changes from 32% to 51%. Ultimately, these results confirm that the silicate phosphor is suitable for the red component in the three primary color phosphors of white light-emitting diodes.

本研究对高温制备的KAlSiO ₄ :1.5 mol%Sm ³⁺ , x mol%Eu ³⁺ ( x  = 2, 3, 4, 5, 6, 7)系列红色荧光粉的光致发光特性进行了分析。固相反应。结果表明，X射线衍射（XRD）细化结果是可靠的。^{随着Eu 3+}浓度的增加，晶胞参数和体积逐渐减小，导致晶粒尺寸减小10.22%。当x  =6时，Sm ³⁺在564、601和651 nm处的发射峰完全消失，相应的半峰宽变为0。在610 nm处，Eu ^{3+的发射峰强度}增加了 4.8 倍。共振非辐射能量转移效应大于共激发效应。最大能量传递效率达到 97.8%。610 nm 处的积分面积高达 85%。荧光粉的色纯度高达92.97%，内量子产率从32%逐渐变为51%。最终，这些结果证实了硅酸盐荧光粉适用于白色发光二极管的三基色荧光粉中的红色成分。