| 光谱学与光谱分析 |
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| Quantum Efficiency of the 5D0 Level of Eu3+ at C2 Site in Cubic Nanocrystalline Y2O3 |
| MENG Qing-yu1, 2, CHEN Bao-jiu1*, XU Wu1, 3, WANG Xiao-jun1, XIE Yi-hua1, LAI Hua-sheng1, 4, DI Wei-hua1, REN Guo-zhong1, ZHAO Xiao-xia1, YANG Yan-min1 |
1. Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
3. University of Science and Technology of China, Hefei 230026, China
4. Jiangxi South Rare-Earth High-Tech. Co., Ltd. Ganzhou 341000, China |
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Abstract In the present the authors are trying to work out how the quantum efficiency depends on the nanocrystalline size. Cubic nanocrystalline Y2O3:Eu3+ samples were prepared by chemical self-combustion. The bulk Y2O3:Eu3+ was obtained by annealing the nanocrystalline at 1 000 ℃ for 2 h. The emission spectra, XRD and fluorescence decay showed that the emission intensities are increased and fluorescence decay becomes slow with an increase in particle diameter of the samples. Two routes were used to estimate the quantum efficiency of the 5D0 level of Eu3+ at C2 site. The quantum efficiencies of 5D0 level of Eu3+ at C2 site in the samples depend on the nanocrystalline sizes. Finally, a detailed discussion about these two approaches for estimating the quantum efficiencies was made.
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Received: 2005-05-28
Accepted: 2005-08-28
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Corresponding Authors:
CHEN Bao-jiu
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| Cite this article: |
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MENG Qing-yu,CHEN Bao-jiu,XU Wu, et al. Quantum Efficiency of the 5D0 Level of Eu3+ at C2 Site in Cubic Nanocrystalline Y2O3[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(08): 1377-1381.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2006/V26/I08/1377 |
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