Controlled synthesis and luminance properties of lanthanide-doped β-NaYF4 microcrystals
来源期刊：JOURNAL OF RARE EARTHS2015年第4期
论文作者：王军梅 李克训 赵彦保 朱珍平
文章页码：339 - 345
摘 要：Hexagonal Yb3+,Er3+-doped Na YF4 crystals with different morphologies were synthesized by a facile hydrothermal method at 140–200 oC. Their shape and size could be controlled by varying hydrothermal temperature, time and doping effect of Ce3+ ions. Interestingly, the products displayed hexagonal sheet, plate, crown-like prism to tube changes in the temperature range from 140 to 200 oC. A combination of "diffusion-controlled growth" and "selective adsorption" was proposed to understand the formation of the Na YF4 crystals with well-defined shapes. Na YF4:Yb3+/Er3+ crystals exhibited shape-dependent up-conversion（UC） luminescence under excitation of 980 nm, and their luminescence property could be tuned by doping Ce3+ ions.
王军梅1,2,3，李克训4，赵彦保1，朱珍平2
1. Key Laboratory for Special Functional Materials, Henan University2. State Kay Laboratory of Coal Conversion Institute of Coal Chemistry, Chinese Academy of Sciences3. University of Chinese Academy of Sciences4. The Electromagnetic Protection Technology Key Laboratory of Shanxi of NO.33 Institute of China Electronic Technology Group Corporation
摘 要：Hexagonal Yb3+,Er3+-doped Na YF4 crystals with different morphologies were synthesized by a facile hydrothermal method at 140–200 oC. Their shape and size could be controlled by varying hydrothermal temperature, time and doping effect of Ce3+ ions. Interestingly, the products displayed hexagonal sheet, plate, crown-like prism to tube changes in the temperature range from 140 to 200 oC. A combination of "diffusion-controlled growth" and "selective adsorption" was proposed to understand the formation of the Na YF4 crystals with well-defined shapes. Na YF4:Yb3+/Er3+ crystals exhibited shape-dependent up-conversion（UC） luminescence under excitation of 980 nm, and their luminescence property could be tuned by doping Ce3+ ions.
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