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采用高温固相法制备长余辉发光材料MgSiO3∶Mn2+,Nd3+。借助X射线粉末衍射、激发光谱、发射光谱和余辉衰减曲线对样品进行表征,研究Nd3+对这种红色荧光粉发光性能的影响。结果表明,Nd3+的掺入没有引起样品的晶体结构的变化,但对光谱强度和余辉性能有着显著影响,通过比较单掺Mn2+、单掺Nd3+、双掺Mn2+,Nd3+体系的热释光曲线,揭示了双掺体系中Nd3+的陷阱作用。双掺样品中存在Nd3+向Mn2+能量传递,Nd3+的最佳掺杂量为4%。
Preparation of Long Afterglow Luminescent Materials MgSiO3: Mn2 +, Nd3 + by Solid State Reaction at High Temperature. The samples were characterized by X-ray powder diffraction, excitation spectrum, emission spectrum and afterglow decay curve to study the effect of Nd3 + on the luminescent properties of this red phosphor. The results showed that Nd3 + did not change the crystal structure of the sample, but had a significant effect on the spectral intensity and afterglow performance. By comparing the thermoluminescence curves of single-doped Mn2 +, single-doped Nd3 +, double-doped Mn2 + and Nd3 + The dual-doped Nd3 + trap effect. There is Nd3 + energy transfer to Mn2 + in the double-doped samples, and the optimum doping amount of Nd3 + is 4%.