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采用硝酸盐热解法(NP)、碳酸氢铵共沉淀法(CP)以及柠檬酸盐燃烧法(CC)分别制备了YLuAG:Ce(Y0.600Lu2.364Al5O12:Ce0.036)荧光粉体. 通过傅里叶变换红外光谱(FTIR), X 射线衍射(XRD), 透射电子显微镜(TEM), 光致发光(PL)及热释光(TL)等表征手段研究了不同方法制备粉体的反应结晶过程、晶粒形貌、激发发射光谱、闪烁性能等. 对比研究表明, 三种方法制备的YLuAG:Ce粉体其表面及体相缺陷数量及分布存在差异, 从而导致了发射光谱峰位的偏移和快慢衰减时间分量的比例变化. 粉体的热释光谱分析结果进一步显示: 不同粉体热释光谱的主发射峰峰位及强度明显不同, 从侧面说明了合成方法诱发了粉体内的缺陷, 而粉体内具有不同陷阱深度的缺陷数量及陷阱复合几率对材料发光性能有较大影响.
YLuAG: Ce (Y0.600Lu2.364Al5O12: Ce0.036) phosphor was prepared by nitrate pyrolysis (NP), ammonium bicarbonate coprecipitation (CP) and citrate combustion method Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence (PL) and thermoluminescence (TL) were used to characterize the reaction crystallization Process, grain morphology, excitation emission spectra, scintillation properties, etc. Comparative studies show that YLuAG: Ce powders prepared by the three methods differ in the number and distribution of defects on the surface and the bulk phase, resulting in a partial shift of the emission peak position And the decay time component of the powder.The results of the pyrolysis spectrum of the powder further showed that the main peak and intensity of the main emission peak of the different powders were obviously different from each other and the flaws of the powder were induced from the side , While the number of defects in the powder with different depths of traps and the recombination probability of traps have a greater impact on the luminescent properties of the material.