Exploration of novel red emitting phosphors containing Eu³⁺ ions is an everlasting topic in the field of luminescent materials due to the application requirement of warm white light-emitting diodes. In this work, the Eu³⁺-doped ScCaO(BO₃) phosphors were synthesized though the high temperature solid-state reaction method. The phase purity and detail information on crystal structure were obtained by X-ray diffraction (XRD) and the technology of Rietveld XRD refinement. Scanning electron microscopy (SEM) was applied to check the particle morphology and EDS mapping was taken to analyze element distributions. Optical properties of the phosphors were studied by measuring the steady-state excitation and emission spectra and also the transient luminescence decays. The emission spectra of ScCaO(BO₃):Eu³⁺ majorly consisted of ⁵D₀-⁷F₁, ⁷F₂ and ⁷F₄ transitions, covering the orange (582–605 nm), red (605–635 nm) and deep red (690–720 nm) spectral regions. The doping concentration of Eu³⁺ ions was optimized to 12% to maximize the optical performance of the red emitting phosphors, whose CIE coordinate and fluorescent lifetime were (0.6458, 0.3537) and 1.516 ms, respectively. The investigation of the thermal quenching behavior of the ScCaO(BO₃):0.12Eu³⁺ phosphor reveals that the emission intensity of Eu³⁺ at 400 K can maintain 68.98% of that at room temperature due to the existence of the thermal activation energy of 0.258 eV. Using such a red-emitting material, the prototype warm white LED device with the CIE coordinate of (0.3262, 0.3363), color rendering index of 86.1 and correlated color temperature of 5871 K can be obtained by combining with the blue emitting BaMgAl₁₀O₁₇:Eu²⁺ and green emitting Zn₂SiO₄:Mn²⁺ phosphors and coating all three on a near-UV LED chip. All the results demonstrate that the ScCaO(BO₃):0.12Eu³⁺ phosphor can sever as a potential red emitting candidate for near-UV excited warm WLEDs.

由于暖白光发光二极管的应用需求，探索含有Eu ³⁺离子的新型红色荧光粉是发光材料领域永恒的话题。在这项工作中，Eu ³⁺掺杂的 ScCaO(BO ₃) 荧光粉是通过高温固相反应法合成的。通过X射线衍射（XRD）和Rietveld XRD精修技术获得相纯度和晶体结构的详细信息。应用扫描电子显微镜 (SEM) 检查颗粒形态，并采用 EDS 映射来分析元素分布。通过测量稳态激发和发射光谱以及瞬态发光衰减来研究磷光体的光学特性。ScCaO(BO ₃ ):Eu ³⁺的发射光谱主要由⁵ D ₀ - ⁷ F ₁、⁷ F ₂和⁷ F组成_{4 个}跃迁，涵盖橙色 (582–605 nm)、红色 (605–635 nm) 和深红色 (690–720 nm) 光谱区域。Eu ³⁺离子的掺杂浓度优化为12%，以最大限度地提高红色荧光粉的光学性能，其CIE坐标和荧光寿命分别为（0.6458、0.3537）和1.516 ms。ScCaO(BO ₃ ):0.12Eu ³⁺荧光粉的热猝灭行为研究表明，Eu ³⁺的发射强度由于存在 0.258 eV 的热活化能，在 400 K 时可以保持室温时的 68.98%。使用这种发红光材料，与发蓝光的BaMgAl ₁₀ O ₁₇结合，可以获得CIE坐标为(0.3262, 0.3363)、显色指数为86.1、相关色温为5871 K的原型暖白光LED器件。:Eu ²⁺和绿色发光 Zn ₂ SiO ₄ :Mn ²⁺磷光体，并在近紫外 LED 芯片上涂覆所有三种。所有结果表明，ScCaO(BO ₃ ):0.12Eu ³⁺磷光体可作为近紫外激发暖WLED 的潜在发红光候选物。