| 用同步辐射研究掺Tb3+氟化物K2GdF5的光谱和Gd3+-Tb3+能量传递 |
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| 引用本文： | 游宝贵,尹民,陈永虎,段昌奎. 用同步辐射研究掺Tb3+氟化物K2GdF5的光谱和Gd3+-Tb3+能量传递[J]. 发光学报, 2011, 32(12): 1216-1220 |
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| 作者姓名： | 游宝贵 尹民 陈永虎 段昌奎 |
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| 作者单位： | 中国科学技术大学 物理系, 安徽 合肥 230026 |
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| 基金项目： | 国家自然科学基金(10904139、11111120060);中科院知识创新工程(KJCX2-YW-M11)资助项目 |
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| 摘 要： | 对比了不同激发波长下水热法合成的K2GdF5:Tb3+(摩尔分数0.5％)单晶材料的光致发光谱线；监测了5 D3→7F6和5 D4→7 F5的激发谱,给出了几组窄带吸收和3个宽带吸收；分析表明窄带发射为Gd3+的8 S7/2→6FJ、8S7/2→6GJ、8S7/2→6DJ、8S7/2→6IJ的跃迁,宽带发射为Gd3+的...
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| 关 键 词： | K2GdF5 Tb3 4f-5d 能量传递 交叉弛豫 |
| 收稿时间： | 2011-08-18 |
Synchrotron Radiation Study of The Luminescence and Energy Transfer of Tb3+-doped K2GdF5 |
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| YOU Bao-gui,YIN Min,CHEN Yong-hu,DUAN Chang-kui. Synchrotron Radiation Study of The Luminescence and Energy Transfer of Tb3+-doped K2GdF5[J]. Chinese Journal of Luminescence, 2011, 32(12): 1216-1220 |
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| Authors: | YOU Bao-gui YIN Min CHEN Yong-hu DUAN Chang-kui |
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| Affiliation: | Department of Physics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | The photoluminescence spectra of K2GdF5:Tb3+(0.5%, mole fraction) single crystal under various excitations were measured and compared. The room temperature excitation spectra of 5D3→7F6 and 5D4→7F5 transitions exhibited three broad bands and three groups of narrow peaks. The narrow peaks were assigned as 8S7/2→6FJ6GJ, 8S7/2→6DJ and 8S7/2→6IJ transition of Gd3+ and the broad bands were assigned as the absorption from the ground state 7F6 to the low-spin states of 4f7(8S)5d configurations of Tb3+. The mechanism of energy transfer from Gd3+ to Tb3+ and the cross relaxation between Tb3+ ions were also analyzed. |
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| Keywords: | K2GdF5 Tb3+ VUV energy transfer cross relaxation |
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