| Green,orange, and red upconversion luminescence in Nd^3＋/Yb^3＋： Cs2NaGdCl6 powders under 785 nm laser excitation |
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| 引用本文： | 王殿元,;郭艳艳,;吴杏华,;张玉霞. Green,orange, and red upconversion luminescence in Nd^3＋/Yb^3＋： Cs2NaGdCl6 powders under 785 nm laser excitation[J]. 中国稀土学报(英文版), 2008, 26(6): 880-882. DOI: 10.1016/S1002-0721(09)60025-9 |
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| 作者姓名： | 王殿元, 郭艳艳, 吴杏华, 张玉霞 |
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| 作者单位： | [1]College of Science, Jiujiang University, Jiujiang 332005, China;; [2]College of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China |
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| 基金项目： | Project supported by Scientific Project of Jiangxi Education Departments of China （2007330） and Science Foundation of Jiujiang University （05K J01） |
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| 摘 要： | Nd^3＋：Cs2NaGdCl6 and Nd^3＋, Yb^3＋：Cs2NaGdCl6 polycrystalline powder samples were prepared by Morss method E. Under 785 nm semiconductor laser pumping, the upconversion luminescence of Nd^3＋ ions in Cs2NaGdCl6 was investigated at room temperature, and three upconversion emissions near 538 nm （Green）, 603 nm （Orange）, and 675 nm （Red） were observed and assigned to ^4G7/2→^4I9/2, （^4G7/2→^4I11/2; ^4G5/2→^4I9/2）, and （^4G7/2→^4I13/2; ^4G5/2→^4I11/2 ）, respectively. The dependences of these upconverted emissions on laser power and Nd^3＋ ion concentration were investigated, to explore the upconversion mechanism. The effect of doping Yb^3＋ ions on the upconversion luminescence of Nd^3＋ in Cs2NaGdCl6 was also studied under 785 nm laser excitation. The energy transfer processes were discussed as the possible mechanism for the above upconversion emissions.
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| 关 键 词： | 发光转换 能量转换 激励状态吸收 稀土 |
| 收稿时间： | 2008-06-10 |
Green, orange, and red upconversion luminescence in Nd/Yb: Cs2NaGdCl6 powders under 785 nm laser excitation |
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| Dianyuan WANG, Yanyan GUO, Xinghua WU,Yuxia Zhang. Green, orange, and red upconversion luminescence in Nd/Yb: Cs2NaGdCl6 powders under 785 nm laser excitation[J]. Journal of Rare Earths, 2008, 26(6): 880-882. DOI: 10.1016/S1002-0721(09)60025-9 |
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| Authors: | Dianyuan WANG Yanyan GUO Xinghua WU Yuxia Zhang |
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| Affiliation: | aCollege of Science, Jiujiang University, Jiujiang 332005, China;bCollege of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China |
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| Abstract: | Nd3+:Cs2NaGdCl6 and Nd3+, Yb3+:Cs2NaGdCl6 polycrystalline powder samples were prepared by Morss method E. Under 785 nm semiconductor laser pumping, the upconversion luminescence of Nd3+ ions in Cs2NaGdCl6 was investigated at room temperature, and three upconversion emissions near 538 nm (Green), 603 nm (Orange), and 675 nm (Red) were observed and assigned to 4G7/2→4I9/2, (4G7/2→4I11/2; 4G5/2→4I9/2), and (4G7/2→4I13/2; 4G5/2→4I11/2), respectively. The dependences of these upconverted emissions on laser power and Nd3+ ion concentration were investigated, to explore the upconversion mechanism. The effect of doping Yb3+ ions on the upconversion luminescence of Nd3+ in Cs2NaGdCl6 was also studied under 785 nm laser excitation. The energy transfer processes were discussed as the possible mechanism for the above upconversion emissions. |
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| Keywords: | upconversion luminescence energy transfer excited state absorption rare earths |
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