A luminescent material of MgO：Eu3 ＋ was synthesized by conventional co - precipitation method. The structure of the prepared samples was characterized by X - ray diffraction, and the influences of the excitation wavelengths on the properties of photoluminescence were also discussed. The characterization from X - ray diffraction showed that the prepared samples have cubic crystalline phase of magnesium oxide and that the average sizes of the particles are ranging from 50 nm to 60 nm. The luminescence property of MgO：Eu3＋ nano - material under different excitation wavelength was investigated by the measurement of emission spec- tra. And the excitation spectra were also discussed through monitoring the different emission wavelengths. Additionally, the influence of the excitation wavelengths on the spectroscopic properties was studied.%采用共沉淀合成法,制备了纳米MgO：Eu3＋发光材料.通过X射线衍射（XRD）、激发光谱和荧光发射光谱等手段,对所合成样品的相结构、发光特性等进行了表征,探讨了激发光波长对样品光致发光性能的影响.XRD表征结果显示,所合成的纳米MgO：Eu3＋材料具有立方晶相结构,颗粒平均尺寸在50nm～60 nm.通过激发光谱和荧光发射光谱的测量,研究了纳米MgO：Eu3＋发光材料在不同发射波长下的激发谱特性,以及不同激发波长激发时,样品的荧光发射特性,讨论了激发波长对MgO：Eu3＋样品发光特性的影响.
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