Synthesis and luminescence properties of CeF3:Tb3+ nanodisks via ultrasound assisted ionic liquid method |
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作者姓名: | 刘三喜, 惠宇, 朱玲, 范习之, 邹兵林, 曹学强 |
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作者单位: | [1]Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, China; [2]State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Ap-plied Chemistry, Chinese Academy of Sciences, Changchun 130022, China |
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基金项目: | Project supported by National Natural Science Foundation of China (21001017, 21171160, 21376031), the Lotus Scholars Program of Hunan, the Natural Science Foundation of ttunan Province (13JJ3068), and Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation (2014CL03, 2014CL05) |
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摘 要: | CeF3 and CeF3:Tb3+ nanocrystals were successfully synthesized by the ultrasound assisted ionic liquid (IL) method at room temperature. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), high-resolution transmission electron micrographs (HRTEM) and photoluminescence (PL) spectra were employed to characterize the nanocrystals. The results of XRD indicated that the obtained samples crystallized well with a hexagonal phase crystal structure. SEM and TEM images demonstrated that the obtained CeF3:Tb3+ nanocrystals had a discoid shapein the presence of ultrasound and IL, whereas only granular nanoparticles were obtained by magnetic stirring. The possible formation mechanisms of the crystal growth were proposed. The PL spectra of the CeF3:Tb3+ nanodisks exhibited a strong green emission when excited at 254 nm. Furthermore, the photoluminescence intensity of CeF3:Tb3+ of the discoid particles was largely improved com-pared with that of the granular nanoparticles.
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关 键 词: | CeF3 纳米晶体 离子液体法 超声合成 发光性能 扫描电子显微镜 透射电子显微镜 HRTEM |
收稿时间: | 2013-10-23 |
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