| Er3+在二氧化硅介孔分子筛中的高效率发光及其分析 |
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| 引用本文： | 林良书,薛燕陵,蒋器成,张晓敏,吴 鹏,刘月明. Er3+在二氧化硅介孔分子筛中的高效率发光及其分析[J]. 物理学报, 2008, 57(9): 5989-5995 |
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| 作者姓名： | 林良书 薛燕陵 蒋器成 张晓敏 吴 鹏 刘月明 |
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| 作者单位： | (1)华东师范大学电子系，上海 200062; (2)华东师范大学上海市绿色化学重点实验室，上海 200062 |
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| 基金项目： | 上海市科委基础重点项目(批准号：05JC14069)资助的课题. |
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| 摘 要： | 研究了一种新型的负载Er3+的二氧化硅介孔分子筛纳米材料，分析了其在有无功能化试剂全氟甲基磺酰(bis(perfluoromethylsulfonyl)amine)修饰作用下的吸收和荧光光谱特性，获得了高强度的荧光发射. 应用Judd-Ofelt理论计算了强度参数(Ω2＝1.88×10-20cm2，Ω4＝5.45×10-20cm2关键词：发光二氧化硅介孔分子筛稀土离子Judd-Ofelt理论
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| 关 键 词： | 发光 二氧化硅介孔分子筛 稀土离子 Judd-Ofelt理论 |
| 收稿时间： | 2007-10-27 |
Highly efficient emission of Er3+ in a functionalized mesoporous silica |
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| Lin Liang-Shu,Xue Yan-Ling,Jiang Qi-Cheng,Zhang Xiao-Min,Wu Peng and Liu Yue-Ming. Highly efficient emission of Er3+ in a functionalized mesoporous silica[J]. Acta Physica Sinica, 2008, 57(9): 5989-5995 |
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| Authors: | Lin Liang-Shu Xue Yan-Ling Jiang Qi-Cheng Zhang Xiao-Min Wu Peng Liu Yue-Ming |
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| Abstract: | Absorption spectra, emission spectra of nanoized erbium implanted mesoporous silica functionalized with and without bis(perfluoromethylsulfonyl)amine as ligand were studied. Luminescence with high intensity has been obtained. The Judd-Ofelt strength parameters Ωt(t=2,4,6)were calculated as Ω2＝1.88×10-20cm2，Ω4＝5.45×10-20cm2 and Ω6＝3.11×10-20cm2, respectively. Oscillator strength, spontaneous emission probability, branching ratio and emission lifetime of each energy levels of Er3+were given. The peak intensity of emission spectra varying with the pump power was discussed. Stimulated emission cross section (σem＝10.9×10-21cm2) was calculated and compared with that of other host materials. |
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| Keywords: | luminescence mesoporous material rare-earth ions Judd-Ofelt theory |
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