Powder samples of Ca₂GeO₄ doped with 0.5, 1, 2, 3, 4 and 5 at% Eu³⁺ were prepared by conventional solid state synthesis technique. XRD analyses confirm obtaining of the pure phase at all dopant concentrations. Emission and excitation spectra show the characteristic peaks of Eu³⁺ ion. The strongest peak in excitation spectra in the range from 300 to 500 nm is located at 393 nm corresponding to the ⁷F₀→⁵L₆ transition. The luminescent spectra consist of the characteristic peaks of Eu³⁺ ion. The ⁵D₀→⁷F_{2, 4} electric dipole transitions are dominant, confirming that the presence of Eu³⁺ ion in position without inversion symmetry in the host is preferable. The peaks are split, so the dopant is placed in more than one crystallographic position. CIE coordinates of the samples show emission colors in the red region slightly influenced by the active ion concentration. The sample doped by 1 at% Eu³⁺ show chromaticity coordinates close to the standard red chromaticity coordinates (0.6270, 0.3726). The obtained results confirm that europium doped Ca₂GeO₄ by could be used as a red phosphor.

通过常规固态合成技术制备了掺有0.5、1、2、3、4和5 at％Eu ³⁺的Ca ₂ GeO ₄粉末样品。XRD分析证实在所有掺杂剂浓度下均获得纯相。发射光谱和激发光谱显示出Eu ³⁺离子的特征峰。在300至500 nm范围内，激发光谱中最强的峰位于393 nm处，对应于⁷ F ₀ → ⁵ L ₆跃迁。发光光谱由Eu ³⁺离子的特征峰组成。的⁵ d ₀ → ⁷ ˚F _2,4电偶极跃迁占主导地位，这证实了在主体中优选存在Eu ³⁺离子且无反对称性的情况。峰被分裂，因此将掺杂剂放置在一个以上的晶体学位置。样品的CIE坐标显示在红色区域中的发射颜色，其受活性离子浓度的影响很小。掺杂1 at％Eu ³⁺的样品的色度坐标接近标准红色色度坐标（0.6270，0.3726）。所得结果证实results掺杂的Ca ₂ GeO ₄可以用作红色磷光体。