| Eu^2＋和Mn^2＋在Sr3MgSi2O8中的光致发光研究 |
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| 引用本文： | 姚光庆,张亮.Eu^2＋和Mn^2＋在Sr3MgSi2O8中的光致发光研究[J].高等学校化学学报,1997,18(1):1-5. |
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| 作者姓名： | 姚光庆 张亮 |
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| 作者单位： | 北京大学化学与分子工程学院!北京，100871，北京大学化学与分子工程学院!北京，100871，北京大学化学与分子工程学院!北京，100871 |
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| 摘 要： | 研究了Ｅｕ＾２＋和Ｍｎ＾２＋共激活的Ｓｒ３ＭｇＳｉ２Ｏ８的荧光性质。Ｅｕ＾２＋和Ｍｎ＾２＋在４６０ｎｍ和６９０ｎｍ的发射峰分别由Ｅｕ＾２＋的５ｄ→４ｆ跃迁和Ｍｎ＾２＋的＾４Ｔ１（＾４Ｇ）→＾６Ａ１ｇ（＾６Ｓ）跃迁产生。未观察到单掺杂Ｍｎ＾２＋的Ｓｒ３ＭｇＳｉ２Ｏ８的荧光发射，而掺入Ｅｕ＾２＋后则出现了Ｍｎ＾２＋的６９０ｎｍ光致发光峰，表明Ｅｕ＾２＋对Ｍｎ＾２＋有敏化作用。Ｅｕ＾２＋的荧光寿命也受Ｍ
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| 关 键 词： | 能量传递 荧光寿命 光致发光 铕离子 锰离子 |
Photoluminescence of Eu~(2+)and Mn~(2+) in Sr_3MgSi_2O_8 |
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| YAO Guang-Qing, ZHANG Liang, SU Mian-Zeng.Photoluminescence of Eu~(2+)and Mn~(2+) in Sr_3MgSi_2O_8[J].Chemical Research In Chinese Universities,1997,18(1):1-5. |
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| Authors: | YAO Guang-Qing ZHANG Liang SU Mian-Zeng |
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| Abstract: | The fluorescence of Eu2+ and Mn2+ coactivated Sr3MgSi2O8 was studied. The emission bands of Eu2+ and Mn2+ peaking at 460 nm and 690 nm are originated from 5d-4f transition of Eu2+ and 4T, (4G) -6A1g(6S) transition of Mn2+ respectively. The fluorescence of Mn2+, singly doped in Sr3MgSi2O,8 has not been observed. However, codoping with Eu2+makes photoluminescence of Mn2+ apPear at 690 nm. This shows that the emission of Mn2+is sensitized by Eu2+, and then the fluorescence lifetime of Eu2+ is affected by Mn2+. The ex-perimental results indicate that there exists an effective energy transfer from Eu2+ to Mn2+ in Sr3MgSi2O8 host. This kind of energy transfer is due to the electric dipole-dipole interaction of the resonance transfer. |
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| Keywords: | Luminescence Energy transfer Fluorescence lifetime |
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