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采用微乳液-水热法制备了NaY(MoO4)2∶Eu3+和Na(Y,Gd)(MoO4)2∶Eu3+荧光粉.利用X射线衍射(XRD)、扫描电镜(SEM)和荧光光谱手段对样品进行了表征.所制样品的X射线衍射峰与标准卡片PDF#82-2369基本吻合.SEM图谱显示所制备的纳米粒子直径为0.5～0.8μm.激发-发射光谱显示,在Eu掺杂浓度为4%时NaY(MoO4)2∶Eu3+发光强度最高;当物质的量比Y∶Gd=0.5∶0.5时,Na(Y,Gd)(MoO4)2∶4%Eu3+的发光强度达到最大,并且在276,395和465 nm波长光激发下Na(Y0.48,Gd0.48)(MoO4)2∶4%Eu3+分别发出淡粉、黄色和橙红色光,可用于白光LED荧光材料.
The NaY (MoO4) 2Eu3 + and Na (Y, Gd) (MoO4) 2Eu3 + phosphors were prepared by microemulsion-hydrothermal method. XRD, SEM and fluorescence spectroscopy The X-ray diffraction peaks of the prepared samples are in good agreement with the standard card PDF # 82-2369.The SEM images show that the prepared nanoparticles have a diameter of 0.5-0.8 μm.The excitation-emission spectra show that at the Eu doping concentration (MoO4) 2: Eu3 + is the highest at 4%, and the emission intensity of Na4Y4: Eu3 + is the maximum at the ratio of Y: Gd = 0.5: Na (Y0.48, Gd0.48) (MoO4) 2: 4% Eu3 + emits light pink, yellow and orange red light respectively at 276, 395 and 465 nm wavelength and can be used for white LED fluorescent materials.