A series of white light emitting Ca₂KZn_2–xV₃O₁₂:xEu³⁺ (x = 0.1, 0.2, 0.3, 0.4 and 0.5) phosphor samples were successfully synthesized by the traditional solid-state reaction method. The powder X-ray diffraction (XRD) patterns of the as-prepared sample reveal the high degree of crystallinity of the cubical structure with \(Ia\overline{3}d\) space group and without any other phase formation. Fourier transform infrared (FTIR) spectra confirmed the occurrence of characteristic vibrational bands of garnet vanadate. The optical diffuse reflectance spectra consisting of broad band absorption in the ultraviolet (UV) region and the sharp absorption in the visible region were ascribing to the charge transfer between ligand–metal in the VO₄ tetrahedral group and Eu³⁺ ions. Under the UV and near-UV excitation wavelengths, the broad band emission and the sharp emission were ascribing to the host material charge transfer of the VO₄ tetrahedral group and f-f transitions of the rare-earth Eu³⁺ ions respectively. Ultimately, through the doping concentration optimization, a high Color Rendering Index (CRI) and excellent Correlated Color Temperature (CCT) were achieved with cool white emission. Therefore, the contribution of Ca₂KZn_1.8Eu_0.2V₃O₁₂ phosphor was significant to phosphor-converted white light emitting device (WLEDs) excited with near ultraviolet.

 通过传统的固态反应方法成功地合成了一系列发白光的Ca ₂ KZn _2–x V ₃ O ₁₂：xEu ³⁺（x = 0.1、0.2、0.3、0.4和0.5）。所制备样品的粉末X射线衍射（XRD）图谱显示具有\（Ia \ overline {3} d \）的立方结构具有很高的结晶度空间群，没有其他相的形成。傅立叶变换红外（FTIR）光谱证实了石榴石钒酸盐特征振动带的出现。由紫外（UV）区的宽带吸收和可见光区的急剧吸收组成的光学漫反射光谱归因于VO ₄四面体基团中的配体-金属与Eu ³⁺离子之间的电荷转移。在紫外和近紫外激发波长下，宽带发射和尖峰发射归因于VO ₄四面体基团的主体材料电荷转移和稀土Eu ^3+的ff跃迁。离子。最终，通过优化掺杂浓度，获得了很高的显色指数（CRI）和出色的相关色温（CCT），并发出了冷白色光。因此，Ca ₂ KZn _1.8 Eu _0.2 V ₃ O ₁₂磷光体对用近紫外光激发的磷光体转换的白光发光器件（WLED）具有重要意义。