A series of red-emitting LaOF:xEu³⁺ (x = 0.03, 0.05, 0.07, 0.11, 0.13, 0.15 and 0.17) phosphors were successfully fabricated via precipitation reaction and calcination. The samples were evaluated by X-ray powder diffraction (XRD), transmission electron microscope (TEM), photoluminescence excitation (PLE) and emission (PL) spectra. It is found that the samples can be excited by near-ultraviolet (NUV) and blue light contributing to apply in phosphor-converted white light emitting diodes (WLEDs). The intense PL peaks were centered at 614 nm due to the ⁵D₀ → ⁷F₂ transition. Moreover, the PL intensity of sample modified with tetraethyl orthosilicate (TEOS) has been enhanced than that of La_0.89OF:0.11Eu³⁺. Finally, the International Commission on Illumination (CIE) chromaticity of phosphors are located in red region. The correlated color temperature (CCT =2530 K) for La_0.89OF:0.11Eu³⁺ modified with the concentration of 7 mol% of TEOS is in the range of “warm appearance”. The results showed that the phosphors are considered as the potential luminescence materials for warm light emitting diodes.

 通过沉淀反应和煅烧成功地制备了一系列发红光的LaOF：x Eu ³⁺（x = 0.03、0.05、0.07、0.11、0.13、0.15和0.17）荧光粉。通过X射线粉末衍射（XRD），透射电子显微镜（TEM），光致发光激发（PLE）和发射（PL）光谱评估样品。发现样品可以被近紫外光（NUV）和蓝光激发，从而有助于应用于荧光粉转换白光发光二极管（WLED）。由于⁵ D ₀ → ⁷ F ₂，强烈的PL峰集中在614 nm处过渡。此外，用原硅酸四乙酯（TEOS）改性的样品的PL强度比La _0.89 OF：0.11Eu ³⁺增强。最后，国际照明委员会（CIE）荧光粉的色度位于红色区域。经浓度为7摩尔％的TEOS修饰的La _0.89 OF：0.11Eu ³⁺的相关色温（CCT = 2530 K）在“暖外观”范围内。结果表明，磷光体被认为是温暖发光二极管的潜在发光材料。