| Continuous zircon-type tetragonal Y Bi0.95-xVO4： 0.05Dy^3＋ solid solution： synthesis,characterization, and optical properties |
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| 作者姓名： | 易娟, 王宇岸, 周大成, 邱建备 |
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| 作者单位： | [1]School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China; [2]Shenzhen Water (Group) Co. Ltd, Shenzhen 518000, China |
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| 基金项目： | This work was supported by the National 973 Program of China （No. 2011CB211708） and the National Natural Science Foundation of China （Nos. 51272097, 61265004, and 61307111）. |
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| 摘 要： | We synthesize continuous solid solutions with monophasic zircon-type structure of vanadates of formula YxBi0.95 VO4：0.05Dy^3＋ （x = 0-0.95） using a combined method of co-precipitation and hydrothermal synthesis. The X-ray diffractometer patterns confirm the formation of a solid solution of YBi0.95-xVO4：0.05Dy^3＋, and the results show that all the samples have monophasic zircon-type structure. The absorption spectra of the prepared phosphors show a blue-shift of the fundamental absorption band edge with increasing Y^3＋ content. An intense tunable characteristic emission of Dy^3＋ is observed with the increasing ratio of Y/Bi. Finally, the mechanism of luminescence of Dya＋ in the YBi0.95 VO4：0.05Dya＋ （x = 0-0.95） solid solution is analyzed and discussed.
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| 关 键 词： | 连续固溶体 水热合成 锆石 光学特性 表征 组合方法 衍射图案 吸收光谱 |
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