| Luminescence and ESR Studies of CaS：Dy Phosphor |
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| 作者姓名： | Vijay Singh 朱俊杰 T. K. Gundu Rao Manoj Tiwari 潘宏程 |
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| 作者单位： | [1]Department of Chemistry, Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210093 [2]Regional Sophisticated Instrumentation Centre, IIT, Powai, Mumbai-400 076, India [3]Department of Post Graduate, Studies and Research in Physics, Bhoj College, Kotra, Bhopal-462 003, India |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 20325516, and the Fund of National Grade Key laboratory of Tunable Laser Technology under Grant No 51472040JW1101. |
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| 摘 要： | CaS phosphor activated with Dy ions is prepared by the solid-state diffusion method. The phosphor is characterized by x-ray powder diffraction, thermogravimetric analysis and photoiuminescence. Defect centres formed in CaS：Dy are studied using the technique of electron spin resonance. The thermoluminescence glow curve shows peaks at around 117℃ and 345℃. Irradiated CaS：Dy exhibits ESR lines due to defect centres. The thermal annealing behaviour of one of the defect centres appears to correlate with the TL peaks at 117℃ and 345℃. This centre is characterized by an isotropic g-value of 2.0035 and is assigned to an F^＋ centre.
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| 关 键 词： | 磷光质涂层 镝离子 固态散射法 电子旋转谐振 薄膜物理学 |
| 收稿时间： | 2005-07-01 |
| 修稿时间： | 2005-07-01 |
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