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采用静电纺丝技术制备了PVP/[Y(NO3)3+Eu(NO3)3]复合纳米带,将其进行热处理,获得了Y2O3∶Eu3+纳米带。采用XRD、FTIR、SEM、TEM、荧光光谱等技术对焙烧后的样品进行了表征。结果表明:600℃焙烧即可获得Y2O3∶Eu3+纳米带,800℃时结晶更为良好,产物属于立方晶系。纳米带表面光滑,由平均直径为30nm的小颗粒紧密排列而成,为多晶结构。随着温度升高,纳米带宽度减小。焙烧800℃获得的Y2O3∶Eu3+纳米带的发光性质优于焙烧600℃的Y2O3∶Eu3+纳米带。与体材料相比,该纳米带的激发光谱Eu3+-O2-电荷迁移态(CTB)发生红移,发射光谱发生蓝移。
The PVP / [Y (NO3) 3 + Eu (NO3) 3] composite nanoribbons were prepared by electrospinning, which were heat treated to obtain Y2O3: Eu3 + nanoribbons. The calcined samples were characterized by XRD, FTIR, SEM, TEM and fluorescence spectroscopy. The results show that the Y2O3:Eu3 + nanoribbons can be obtained by calcination at 600 ℃. The crystallization is more favorable at 800 ℃. The products belong to the cubic system. Nanobelts with smooth surface, the average diameter of 30nm from the small particles arranged closely, for the polycrystalline structure. As the temperature increases, the nanobelt width decreases. The luminescent properties of Y2O3:Eu3 + nanoribbons calcined at 800 ℃ are better than those of Y2O3:Eu3 + nanoribbons calcined at 600 ℃. Compared with the bulk material, the excitation band Eu3 + -O2- charge transfer state (CTB) of the nanoribbons is red-shifted, and the emission spectrum shifts blue-shifted.