| A New Method of Calculating Trap Depth of Rare Earth Materials |
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| 作者姓名： | 王丽伟 徐征 滕枫 姜薇薇 张福俊 孟立建 |
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| 作者单位： | Institute of Optoelectronics Beijing Jiaotong University Beijing 100044 China，Institute of Optoelectronics Beijing Jiaotong University Beijing 100044 China，Departamento de Fisica Instituto Superior de Engenharia do Porto Porto 4200-072 Portugal，Postdoctoral Working Station of Tianjin University Postdoctoral Working Station of Zhong-huan San-Jin Ltd. Tianjin Economy and Technological Development Area Tianjin 300457 China，Institute of Optoelectronics Beijing Jiaotong University Beijing 100044 China，Institute of Optoelectronics Beijing Jiaotong University Beijing 100044 China，Institute of Optoelectronics Beijing Jiaotong University Beijing 100044 China，Departamento de Fisica Instituto Superior de Engenharia do Porto Porto 4200-072 Portugal |
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| 基金项目： | 中国科学院资助项目，中国博士后科学基金，中国科学院资助项目，科技部科研项目 |
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| 摘 要： | In the forbidden band of the materials there aresome trap levels which is caused by i mpurities or de-fect structure inthe trapping materials1,2].These ma-terials are characterized by these trap levels,where-fore it is significant to calculate the trap d…
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| 关 键 词： | 稀土 热发光 发光动力学 陷阱深度 计算方法 |
| 文章编号： | 1002-0721（2005）06-0672-04 |
| 收稿时间： | 2005-04-10 |
| 修稿时间： | 2005-09-30 |
A New Method of Calculating Trap Depth of Rare Earth Materials |
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| Wang Liwei,Xu Zheng,Teng Feng,Jiang Weiwei,Zhang Fujun,Meng Lijian.A New Method of Calculating Trap Depth of Rare Earth Materials[J].Journal of Rare Earths,2005,23(6):672-675. |
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| Authors: | Wang Liwei Xu Zheng Teng Feng Jiang Weiwei Zhang Fujun Meng Lijian |
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| Abstract: | The mainly characteristic of trapping materials is the trap depth. So it is significant to calculate the trap depth for the trapping materials. A new method of calculating trap depth, which is based on energy band and using rate equations to analyze thermoluminescence, was brought forward. This method which uses the rate equations of the process and the thermoluminescence curve can replace traditional methods such as first order or second order kinetics. The trap depth of SrAl2O4:Eu2 , Dy3 and Sr4Al14O25:Eu2 , Dy3 was estimated from the glow curve. Then the numevical solution of the trap depth can be obtained. From the results of experiments and calculations, this method can accurately indicate the whole process. |
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| Keywords: | luminescence kinetics thermo-luminescence trap depth rare earths |
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