| Spectroscopic Studies on Charge Transfer from Ce^3＋ to Yb^3＋ in KMgF3 ： Ce, Yb Nanocrystals |
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| 作者姓名： | YAN Jing-hui ZHANG Hai-yan LI Zhong-tian CAO Jie SONG Li-hong ZHANG Hui-qiu SHI Chun-shan |
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| 作者单位： | [1]College of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China [2]Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China |
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| 基金项目： | Supported by the Science Foundation of Changchun City of China（ No. 2005093） and the Science and Technology Department of Jilin Province, P. R. China（ No. 20050507）. |
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| 摘 要： | Nanocrystals of KMgF3 single-doped and codoped with Ce^3＋ or/and Yb^3＋ were synthesized separately by the mi-croemulsion method. The X-ray diffraction（XRD） patterns were indexed to show that the KMgF3 crystal system was unchanged. The fluorescent spectra of KMgF3： Ce, Yb polycrystal powders were studied and compared with those of the Ce,Yb doped KMgF3 crystals produced using the high-temperature solid phase method. The diffuse reflection spectra and infrared emission of KMgF3： Ce, Yb were investigated. From the results, the authors could confirm that there were charge transfer processes from Ce^3＋ to Yb^3＋ in both KMgF3： Ce,Yb nanocrystals and polycrystal powders.
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| 关 键 词： | 纳米晶 荧光光谱 电荷转移 Ce^3＋ Yb^3＋ KMgF3 : Ce Yb |
| 收稿时间： | 27 December 2006 |
Spectroscopic Studies on Charge Transfer from Ce3+ to Yb3+ in KMgF3:Ce, Yb Nanocrystals |
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| YAN Jing-hui ZHANG Hai-yan LI Zhong-tian CAO Jie SONG Li-hong ZHANG Hui-qiu SHI Chun-shan.Spectroscopic Studies on Charge Transfer from Ce3+ to Yb3+ in KMgF3:Ce, Yb Nanocrystals[J].Chemical Research in Chinese University,2007,23(4):395-398. |
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| Authors: | YAN Jing-hui ZHANG Hai-yan LI Zhong-tian CAO Jie SONG Li-hong ZHANG Hui-qiu SHI Chun-shan |
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| Institution: | 1. College of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China;2. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China |
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| Abstract: | Nanocrystals of KMgF3 single-doped and codoped with Ce3 or/and Yb3 were synthesized separately by the microemulsion method. The X-ray diffraction(XRD) patterns were indexed to show that the KMgF3 crystal system was unchanged. The fluorescent spectra of KMgF3: Ce, Yb polycrystal powders were studied and compared with those of the Ce,Yb doped KMgF3 crystals produced using the high-temperature solid phase method. The diffuse reflection spectra and infrared emission of KMgF3: Ce, Yb were investigated. From the results, the authors could confirm that there were charge transfer processes from Ce3 to Yb3 in both KMgF3: Ce, Yb nanocrystals and polycrystal powders. |
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| Keywords: | Microemulsion Nanocrystal Fluorescent spectra Charge transfer |
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