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| 立方相Y2O3:Eu纳米晶中C2格位Eu3+的5D0能级量子效率 | |
| 引用本文： | 孟庆裕,陈宝玖,许武,王晓君,谢宜华,赖华生,狄伟华,任国仲,赵晓霞,杨艳民.立方相Y2O3:Eu纳米晶中C2格位Eu3+的5D0能级量子效率[J].光谱学与光谱分析,2006,26(8):1377-1381. |
| 作者姓名： | 孟庆裕 陈宝玖 许武 王晓君 谢宜华 赖华生 狄伟华 任国仲 赵晓霞 杨艳民 |
| 作者单位： | 1. 中国科学院长春光学精密机械与物理研究所,激发态物理重点实验室,吉林,长春,130033;中国科学院研究生院,北京,100039 2. 中国科学院长春光学精密机械与物理研究所,激发态物理重点实验室,吉林,长春,130033 3. 中国科学院长春光学精密机械与物理研究所,激发态物理重点实验室,吉林,长春,130033;中国科学技术大学,安徽,合肥,230026 4. 中国科学院长春光学精密机械与物理研究所,激发态物理重点实验室,吉林,长春,130033;江西南方稀土高技术股份有限公司,江西,赣州,341000 |
| 基金项目： | 国家高技术研究发展计划(863计划) , 国家自然科学基金 , 吉林省自然科学基金 , 吉林省杰出青年科学基金 |
| 摘 要： | 采用化学自发燃烧法制备了立方相不同粒径的纳米晶Y2O3:Eu(1 mol%),并通过退火处理得到了体相材料,测量了它们的发射谱和处在C2格位上Eu3 的5D0能级室温和10 K下的荧光衰减曲线.利用发射光谱数据计算了Eu3 在不同粒径纳米晶体Y2O3中的光学跃迁强度参数Ωλ(λ=2,4),通过对室温和低温下5D0能级荧光衰减的测量,用两种不同方法估计了处在C2格位上Eu3 的5D0能级的量子效率,对所获得的结果进行了讨论,并对两种获得量子效率不同方法进行了评价. |
| 关 键 词： | 量子效率 荧光衰减 纳米 Y2O3:Eu3 |
| 文章编号： | 1000-0593（2006）08-1377-05 |
| 收稿时间： | 2005-05-28 |
| 修稿时间： | 2005-08-28 |
Quantum Efficiency of the 5D0 Level of Eu3+ at C2 Site in Cubic Nanocrystalline Y2O3 |
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| MENG Qing-yu,CHEN Bao-jiu,XU Wu,WANG Xiao-jun,XIE Yi-hua,LAI Hua-sheng,DI Wei-hua,REN Guo-zhong,ZHAO Xiao-xia,YANG Yan-min.Quantum Efficiency of the 5D0 Level of Eu3+ at C2 Site in Cubic Nanocrystalline Y2O3[J].Spectroscopy and Spectral Analysis,2006,26(8):1377-1381. | |
| Authors: | MENG Qing-yu CHEN Bao-jiu XU Wu WANG Xiao-jun XIE Yi-hua LAI Hua-sheng DI Wei-hua REN Guo-zhong ZHAO Xiao-xia YANG Yan-min |
| Institution: | 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 |
| 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 degrees C 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. |
| Keywords: | Quantum efficiency Fluorescence decay Nanocrystalline Y_2O_3:Eu~(3 ) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |