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User Center |
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| Journal of Rare Earths |
| Administrated by CAST |
| Sponsored by CSRE and GRINM |
| Published by Elsevier B.V. |
| Editor-in-Chief: XU Guang xian |
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| Journal of Rare Earths |
| (monthly, Since 1990) |
| ISSN 1002-0721 CODEN: JREAE6 |
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| Journal of the Chinese Society of Rare Earths |
| (Bimonthly, Since 1983) |
| ISSN 1000-4343 CODEN: ZXXUE5 |
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Journal of Rare Earths Issue |
| Journal of Rare Earths |
2008 Year Vol.26 NO.1 |
Page: 40-43 |
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| Synthesis of colloidal LaF3: 0.04Yb3+, 0.01Er3+ nanocrystals with green upconversion luminescence |
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| WANG Yan (王 艳)1, 2, QIN Weiping (秦伟平)1, 3, ZHANG Jisen (张继森)1, CAO Chunyan (曹春燕)1, 2, ZHANG Jishuang (张继双)1, 2, JIN Ye (金 叶)1, 2 |
| (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 100049, China; 3. State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, Changchun 130012, China) |
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| Abstract: |
A synthesis of LaF3:0.04Yb3+,0.01Er3+ nanocrystals with oleic acid as a capping ligand was presented. The X-Ray Diffraction (XRD) pattern indicated that the power was a single hexagonal phase. Transmission Electron Microscopy (TEM) demonstrated that the average size of the nanocrystals was less than 10 nm, with a narrow size distribution. The nanocrystals were dispersible in nonpolar solvents and form a fully transparent colloidal solution, and the solution was stable for several months without any aggregates. The Yb3+-Er3+ codoped nanocrystal colloidal solution exhibited a bright green upconversion fluorescence under 980 nm excitation from a diode laser. The nanocrystals were potentially applicable in biolabeling and bioimaging. |
| Key word:upconversion luminescence; colloidal; LaF3:0.04Yb3+,0.01Er3+; nanocrystals; rare earths |
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