Upconversion emission of SrYbF5:Er3+nanosheets modified by Tm3+ions |
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作者姓名: | 刘晴 颜晓红 陈远 王祥夫 |
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作者单位: | [1]College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China [2]School of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, China |
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基金项目: | Project supported by National Natural Science Foundation of China (51032002), Key Project of the National High Technology Re- search and Development Program ("863" Program) of China (2011AA050526), Science and Technology Support Plan of Jiangsu Province (BE2011191) and Funding of Jiangsu Innovation Program for Graduate Education (CXZZ13_0143) |
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摘 要: | Through a hydrothermal route, the Er3+and Tm3+co-doped SrYbF5 nanosheets were synthesized. The resulting samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and luminescence spec-tra. Under the excitation of 980 nm laser irradiation, the upconversion emissions of Tm3+ions centered at 474 nm (1G4→3H6), 679 nm (3F2→3H6), 699 nm (3F3→3H6), 803 nm (3H4→3H6) and emissions of Er3+ions centered at 522 nm (2H11/2→4I15/2), 543 nm (4S3/2→4I15/2), 654 nm (4F9/2→4I15/2) were observed. The upconversion emissions of Er3+ions were adjusted by the concentration of Tm3+ions. The energy transfer mechanisms among Er3+-Yb3+-Tm3+in SrYbF5 nanosheets were discussed.
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关 键 词: | 上转换发光 离子修饰 纳米 扫描电子显微镜 X射线衍射 X射线光谱 铒离子 能量色散 |
收稿时间: | 2013-05-27 |
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