| CaWO4中Eu3+的长余辉发光 |
| Long-lasting Phosphorescence in Eu3+-doped CaWO4 |
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| 摘要: |
| 关键词: 长余辉 钨酸钙 铕 热释光 |
| 基金项目: |
| Abstract: Eu3+ activated CaWO4 was prepared by high temperature solid state reaction technique. Red afterglow was observed for in the CaWO4∶Eu after exciting with 254 nm light due to Eu3+ transition from 5D0 to 7FJ (J=0, 1, 2, 3,4). By the calculation of the thermoluminescence spectrum of CaWO4∶Eu, we conclude that there were two types of trap centers: VCa″ was formed by substitution of Ca2+ by Eu3+ and complex traps were produced because of substitution of W6+ by Eu3+. |
| Keywords: afterglow calcium tungstate europium thermoluminescence |
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| 刘正伟,刘应亮,袁定胜,张静娴,容建华,黄浪欢.CaWO4中Eu3+的长余辉发光[J].无机化学学报,2004,20(12):1433-1436. |
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