| 立方Gd2O3∶Eu纳米晶及光谱性质 |
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| 引用本文： | 马多多,刘行仁,孔祥贵.立方Gd2O3∶Eu纳米晶及光谱性质[J].中国稀土学报,1999,17(2). |
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| 作者姓名： | 马多多 刘行仁 孔祥贵 |
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| 作者单位： | 中国科学院长春物理研究所，中国科学院激发态物理开放研究实验室 |
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| 基金项目： | 国家自然科学基金,863高技术资助项目,中国科学院激发态物理开放研究实验室项目 |
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| 摘 要： | 用透射电镜拍摄球形ＣＧｄ２Ｏ３∶Ｅｕ纳米晶，并研究了室温下它的激发和发射光谱。结果表明，９００℃制备的体材料和相应的纳米晶相比，其激发光谱存在明显差异。前者以基质激发带为主导，电荷转移带（ＣＴＢ）很弱，而后者以ＣＴＢ为主。在绝缘体稀土氧化物中，可以忽略纳米效应对Ｅｕ３＋离子的４ｆ４ｆ能级跃迁的激发和发射光谱峰位的影响
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| 关 键 词： | 稀土，Eu~(3＋)掺杂的Gd_2O_3，纳米晶，光谱，发光 |
Spectral Properties of Cubic Gd2O3Eu Nanocrystals |
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| Ma Duoduo,Liu Xingren,Kong
Xianggui.Spectral Properties of Cubic Gd2O3Eu Nanocrystals[J].Journal of the Chinese Rare Earth Society,1999,17(2). |
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| Authors: | Ma Duoduo Liu Xingren Kong
Xianggui |
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| Abstract: | The transmission electron
microscopic morphology and excitation and emission spectra of cubic Gd2O3Eu nanocrystals
were investigated. The excitation spectrum of the Gd2O3Eu nanocrystal consists of charge
transfer band(CTB) of Eu3 mainly, and the excitation lines of Gd3 and Eu3 are at higher
levels. The cubicGd2O3Eu nanocrystals obtained at 900 are distinct from the bulk in the
excitation spectra. There are negligible grainsize effects on the excitation and emission spectra
which may be presented in the features of wellknown 4f-4f transitions of the corresponding Eu3
levels. |
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| Keywords: | Rare earths Gd2O3Eu Nanocrystals Spectrum Luminescence |
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