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| 980nm激发下Tm~(3+)诱导的Gd~(3+)上转换发光性质研究 | |
| 引用本文： | 曹春燕,余晓光,秦伟平,张继森. 980nm激发下Tm~(3+)诱导的Gd~(3+)上转换发光性质研究[J]. 光谱学与光谱分析, 2010, 30(3). DOI: 10.3964/j.issn.1000-0593(2010)03-0616-05 |
| 作者姓名： | 曹春燕 余晓光 秦伟平 张继森 |
| 作者单位： | 1. 井冈山大学数理学院,江西,吉安,343009 2. 吉林大学电子科学与工程学院,集成光电子国家重点联合实验室,吉林,长春,130012 3. 中国科学院长春光学精密机械与物理研究所,中国科学院激发态物理重点实验室,吉林,长春,130033 |
| 基金项目： | 国家自然科学基金项目(10774142,50672030,10874058);;江西省自然科学基金项目(2009GQW0010);;江西省教育厅科技计划项目(GJJ10203)资助 |
| 摘 要： | 通过简单温和水热法,制备了系列Tm3+/Yb3+共掺GdF3粉末。用X射线衍射仪和场发射扫描电镜对样品进行了结构和形貌表征。在980 nm半导体连续激光二极管激发下,用荧光光谱仪对氩气保护下退火后的粉末样品进行了上转换发射光谱表征。粉末上转换发光动力学过程是在脉冲(脉宽10 ns,重复频率10 Hz)YAG∶Nd激光器激发光参量振荡器至980 nm激发下研究的,发光信号由单色仪和示波器记录。文章主要讨论了Gd3+的311.6 nm(6P7/2→8S7/2)的发光动力学行为。发光动力学分析结果表明:在980 nm激发下,Gd3+,作为一种基质离子,其发光是由Yb3+作为一级敏化离子通过多步能量传递把能量传递给Tm3+使其布居至3P2能级;然后Tm3+作为二级敏化离子通过能量传递过程3P2→3H6(Tm3+):8S7/2→6IJ(Gd3+)把能量传给Gd3+;进一步,Gd3+与Yb3+或Tm3+之间通过能量传递过程布居至高激发多重态6DJ能级;最后,可观察到Gd3+的激发态6D9/2,6IJ,6P5/2及6P7/2至基态8S7/2的发射。同时,Tm3+在其自身发光过程中也充当激活剂,除了3P2及1I6至3H6的发射外,其他发射不作研究。文章还研究了基质Gd3+依赖于Yb3+浓度、Tm3+浓度、退火温度及激发功率密度的紫外上转换发光性质。 |
| 关 键 词： | Tm3+/Yb3+共掺GdF3 紫外上转换发射 发光动力学 |
Study on Ultraviolet Upconversion Emissions of Gd~(3+) Induced by Tm~(3+) under 980 nm Excitation |
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| CAO Chun-yan,YU Xiao-guang,QIN Wei-ping,ZHANG Ji-sen. Study on Ultraviolet Upconversion Emissions of Gd~(3+) Induced by Tm~(3+) under 980 nm Excitation[J]. Spectroscopy and Spectral Analysis, 2010, 30(3). DOI: 10.3964/j.issn.1000-0593(2010)03-0616-05 | |
| Authors: | CAO Chun-yan YU Xiao-guang QIN Wei-ping ZHANG Ji-sen |
| Affiliation: | CAO Chun-yan1,YU Xiao-guang1,QIN Wei-ping2,ZHANG Ji-sen31.College of Mathematics , Physics,Jinggangshan University,Ji'an 343009,China2.State Key Laboratory on Integrated Optoelectronics,College of Electronic Science , Engineering,Jilin University,Changchun 130012,China3.Key Laboratory of Excited State Processes,Changchun Institute of Optics,Fine Mechanics , Physics,Chinese Academy of Sciences,Changchun 130033,China |
| Abstract: | Series of Tm3+/Yb3+ co-doped GdF3 powders were synthesized through an easy and mild hydrothermal method.The phase and purity of powders were characterized by powder X-ray diffraction(XRD)(Rigaku RU-200b).The morphologies of the samples were characterized by field emission scanning electron microscopy(FE-SEM)(Hitachi S-4800).The ultraviolet(UV) up-conversion(UC)emission spectra were recorded by a fluorescence spectrophotometer(Hitachi F-4500) with a 980 nm semiconductor continuous wave laser diode as the exc... |
| Keywords: | Tm3+/Yb3+ co-doped GdF3 Ultraviolet upconversion emissions Luminescent dynamics |
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