| Preparation and Upeonversion Lumineseenee ofNanoerystailine Gd2O3： Er^3＋, Yb^3＋ |
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| 引用本文： | 李艳红.Preparation and Upeonversion Lumineseenee ofNanoerystailine Gd2O3： Er^3＋, Yb^3＋[J].武汉理工大学学报(材料科学英文版),2008,23(4):448-451. |
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| 作者姓名： | 李艳红 |
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| 作者单位： | [1]School of Material Science and Engineering, Shenyang Institute of Chemical Technology, Shenyang 110142, China; [2]Key Laboratory of Rare Earth Chemistry and Physics, Chinese Academy of Sciences, Changchun130022, China |
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| 基金项目： | Funded by the Foundation for University by Educational Department of Liaoning（No.05L337） |
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| 摘 要： | Nanocrystalline Gd1.77Yb0.2Er0.03O3 samples were prepared by combustion and precipitation methods. Structures and upconversion luminescence properties of samples were studied. The results of XRD show that all samples are cubic structure, the average crystallite size could be calculated as 23 nm and 39 nm, respectively. The lattice constants were obtained. The FT-IR spectra were measured to investigate the vibrational feature of the samples. Upconversion luminescence spectra of samples under 980 nm laser excitation were investigated. The strong red emission of samples were observed, and attributed to 4F9/2→4I152 transitions of Er^3＋ ions, the emission intensity for sample synthesized by precipitation method is stronger compared to that of combustion method. The possible upconversion luminescence mechanisms in nanocrystalline Gd1.77Yb0.2Er0.03O3 were discussed.
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| 关 键 词： | 沉淀 发射强度 燃烧 对比研究 |
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