| YLiF4:Er3+,Yb3+中敏化剂浓度对发光的影响 |
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| 引用本文： | 赵谡玲,徐征,裴晓将. YLiF4:Er3+,Yb3+中敏化剂浓度对发光的影响[J]. 光谱学与光谱分析, 2005, 25(12): 1933-1937 |
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| 作者姓名： | 赵谡玲 徐征 裴晓将 |
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| 作者单位： | 北京交通大学光电子技术研究所,信息存储、显示与材料开放实验室,北京,100044;北京交通大学光电子技术研究所,信息存储、显示与材料开放实验室,北京,100044;天津大学博士后流动站,天津经济技术开发区博士后工作站天津中环天津有限公司分站,天津,300457 |
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| 基金项目： | 国家重点基础研究发展计划（2003CB314707）,北京交通大学人才基金（2005RC028）和北京交通大学校基金资助 |
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| 摘 要： | 用水热法合成了YLiF4：Er^3＋，Yh^3＋，Er^3＋的浓度固定为2mol％，Yb^3＋浓度变化范围是0～7mol％。在这个浓度范围内，980nm附近的吸收随着Yb^3＋浓度的增大而增强。用980nm激发得到的上转换发光强度随Yb^3＋浓度的增大而增强。在Yb^3＋浓度低于6mol％时，上转换发光强度随Yb^3＋浓度的增大变化的比较缓慢，当Yb^3＋浓度超过6mol％时，上转换发光突然增强。以Yb^3＋浓度是2mol％的样品为代表，研究了Er^3＋对应红光、绿光发射的激发光谱，并测试了不同波长激发下的红光发射和绿光发射，证明红光发射是来源于^4F9/2→^2I15/2，绿光是来自^4S3/2→^2I15/2和^2H11/2→^2I15/2。它们的上转换过程都是双光子过程。
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| 关 键 词： | 上转换发光 YLiF4:Er3+ Yb3+ 水热合成 |
| 文章编号： | 1000-0593(2005)12-1933-05 |
| 收稿时间： | 2005-03-10 |
| 修稿时间： | 2005-07-20 |
Donor Concentration Dependence of Upconversion Luminescence in YLiF4: Er3+ , Yb3+ |
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| ZHAO Su-ling,XU Zheng,PEI Xiao-jiang. Donor Concentration Dependence of Upconversion Luminescence in YLiF4: Er3+ , Yb3+[J]. Spectroscopy and Spectral Analysis, 2005, 25(12): 1933-1937 |
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| Authors: | ZHAO Su-ling XU Zheng PEI Xiao-jiang |
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| Affiliation: | 1. Institute of Optoelectronic Technology., Beijing Jiaotong University, the Lab of Materials for Information Storage and Displays, Beijing 100044, China; 2. Tianjin University Postdoctoral Working Station, Economy and Technological Development Area Postdoctoral Working Station, Tianjin Zhong-Huan San-Jin Ltd., Tianjin 300457, China |
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| Abstract: | YLiF4 :Er3+, Yb3+ was synthesized by hydrothermal method. The concentration of Er3+ was 2 mol%, and Yb3+ changed from 0 to 7 mol%. At room temperature the absorbance of YLiF4: Er3+, Yb3+ in all samples was measured from 200 to 1 200 nm. The absorbance around 980 nm increased with increasing Yb3+ concentration. The result shows that the upconversion intensity excited at 980 nm was enhanced. The enhanced intensity is dependent on the Yb3+ concentration. The excitation spectra and photoluminescence spectra were measured in the sample with Yb3+ concentration of 2 mol%. The red and green luminescence came from the transition 4F(9/2) --> 2 I(15/2), and 4 S(3/2) -->2 I(15/2) and 2H(11/2) --> 2 I(15/2), respectively. |
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| Keywords: | Upconvetsion luminescence YLiF4:Er3+ Yb3+ Hydrothermal |
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