Novel scheelite structures of Li₂Ca(WO₄)₂, Li₂Ca₂(WO₄)(SiO₄), and LiCa₂(WO₄)(PO₄) fluorescent materials were successfully prepared using a high-temperature solid-phase process. The compounds were characterized by X-ray diffraction and energy dispersive spectroscopy. The tests revealed that the substitution of [WO₄]²⁻ by [SiO₄]⁴⁻ or [PO₄]³⁻ tetrahedron in tungstate had no significant influence on the crystal structure of the Li₂Ca(WO₄)₂. When Dy³⁺ ions were introduced as an activator at an optimum doping concentration of 0.08 mol%, all of the as-prepared phosphors generated yellow light emissions, and the emission peak was located close to 576 nm. Replacing [WO₄]²⁻ with [SiO₄]⁴⁻ or [PO₄]³⁻ tetrahedron significantly increased the luminescence of the Li₂Ca(WO₄)₂ phosphors. Among them, the LiCa₂(WO₄)(PO₄):0.08Dy³⁺ phosphor had the best luminescence properties, decay life (τ = 0.049 ms), and thermal stability (87.8%). In addition, the as-prepared yellow Li₂Ca(WO₄)₂:0.08Dy³⁺, Li₂Ca₂(WO₄)(SiO₄):0.08Dy³⁺, and LiCa₂(WO₄)(PO₄):0.08Dy³⁺ phosphor can be used to fabricate white light emitting diode (LED) devices.

使用高温固相法成功制备了新型白钨矿结构的 Li ₂ Ca(WO ₄ ) ₂、Li ₂ Ca ₂ (WO ₄ )(SiO ₄ ) 和 LiCa ₂ (WO ₄ )(PO ₄ ) 荧光材料过程。通过X射线衍射和能量色散光谱对化合物进行表征。测试表明，[WO ₄ ] ^2-在钨酸盐中被[SiO ₄ ] ^4-或[PO ₄ ] ^3-四面体取代对锂的晶体结构没有显着影响。₂ Ca(WO ₄ ) ₂。当以 0.08 mol% 的最佳掺杂浓度引入Dy ³⁺离子作为活化剂时，所有制备的荧光粉均产生黄光发射，发射峰位于接近 576 nm 处。用[SiO ₄ ] ^4-或[PO ₄ ] ^3-四面体代替[WO ₄ ] ^2-显着增加了Li ₂ Ca(WO ₄ ) ₂磷光体的发光。其中，LiCa ₂ (WO ₄ )(PO ₄ )：0.08Dy ³⁺荧光粉具有最佳的发光特性、衰减寿命 ( τ = 0.049 ms) 和热稳定性 (87.8%)。此外，所制备的黄色 Li ₂ Ca(WO ₄ ) ₂ :0.08Dy ³⁺、Li ₂ Ca ₂ (WO ₄ )(SiO ₄ ):0.08Dy ³⁺和 LiCa ₂ (WO ₄ )(PO ₄ ):0.08Dy ³⁺荧光粉可用于制造白光发光二极管 (LED) 器件。