水热法合成Y<sub<2</sub<O<sub<3</sub< ∶ Yb<sup<3+</sup<,Er<sup<3+</sup<上转换材料及发光特性
Hydrothermal Synthesis of Y<sub<2</sub<O<sub<3</sub<∶Yb<sup<3+</sup<, Er<sup<3+</sup< Up-Conversion Material and Luminescent Properties
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摘要: 以Y<sub<2</sub<O<sub<3</sub<,Yb<sub<2</sub<O<sub<3</sub<和Er<sub<2</sub<O<sub<3</sub<为原料,利用水热法制备Y<sub<2</sub<O<sub<3</sub<∶Yb<sup<3+</sup<,Er<sup<3+</sup<纳米上转换材料. 通过X射线粉末衍射、扫描电镜和透射电镜对材料的晶型、成分、粒径及表面形貌进行分析. 实验结果表明:所得粉体的晶型为立方晶系,晶粒为圆球形,平均粒径为20nm. 在波长为980nm半导体Abstract: Infrared-to-visible up-conversion nanoparticles Y<sub<2</sub<O<sub<3</sub<∶Yb<sup<3+</sup<, Er<sup<3+</sup< were synthesized by hydrothermal method utilizing reagents of Y<sub<2</sub<O<sub<3</sub<, Yb<sub<2</sub<O<sub<3</sub< and Er<sub<2</sub<O<sub<3</sub<. The synthesized crystal structure and components were analyzed using X-ray diffraction apparatus. The results show that the nanocrystal belongs to cubic system. The nanocrystals are spherical particles with an average diameter of 20nm, with the help of scanning electron microscopy (SEM) and transmission electron microscopy (TEM) technology. The up-conversion fluorescence with green and red colors is obtained under 980nm laser excitation and the intensity of luminescence would be changed with the doping ratio of Yb and Er elements.
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