In this paper, NaYGeO₄:$x$Bi${}^{3+}$ phosphors were successfully prepared by high-temperature solid-state reaction. XRD patterns and refinement results show that Bi${}^{3+}$ ions are successfully incorporated into the matrix material and replaced by Y${}^{3+}$. The emission spectrum shows that the optimal doping concentration of the sample is 0.25%, and it is theoretically studied that the concentration quenching is caused by the nearest neighbor ions. The fluorescence lifetime curve showed that with the increase of Bi${}^{3+}$ concentration, the fluorescence lifetime first increased and then decreased. The thermal stability of the sample was studied, and it was found that when the temperature increased to 523 K, the luminescence intensity of the phosphor was still 70% of the initial intensity, and the activation energy was calculated to be 0.306 eV. Finally, the CIE color coordinates of the sample with the best luminous intensity were calculated as (0.1595, 0.0342), and the color coordinates are located in the blue light region.

在本文中，NaYGeO ₄：$X$双${}^{3+}$通过高温固相反应成功制备了荧光粉。XRD 图案和细化结果表明，Bi${}^{3+}$离子成功地结合到基体材料中并被 Y 取代${}^{3+}$. 发射光谱表明样品的最佳掺杂浓度为0.25%，理论上研究了浓度猝灭是由最近邻离子引起的。荧光寿命曲线表明，随着 Bi 的增加${}^{3+}$浓度时，荧光寿命先增加后减少。研究了样品的热稳定性，发现当温度升高到523 K时，荧光粉的发光强度仍为初始强度的70%，计算得到的活化能为0.306 eV。最后计算出发光强度最好的样品的CIE色坐标为(0.1595, 0.0342)，色坐标位于蓝光区域。