Controllable Synthesis and Surface-enhanced Upconversion Luminescence of Ultra-thin Gold Shell Coated NaYF4: Yb, Er@SiO2 Nanostructures
文献类型：期刊论文
| 作者 | An, Xi-Tao; Wang, Yue; Mu, Jia-Jia; Li, Jing; Zhang, Li-Gong ; Luo, Yong-Shi; Chen, Li
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| 刊名 | Faguang Xuebao/Chinese Journal of Luminescence
 |
| 出版日期 | 2018 |
| 卷号 | 39期号:11页码:1505-1512 |
| 关键词 | Gold coatings Curve fitting Energy transfer Finite difference time domain method Fluorescence Forster resonance energy transfer Laser excitation Nanoshells Nanostructured materials Shells (structures) Silica Spectrum analysis Surface plasmons |
| ISSN号 | 10007032 |
| DOI | 10.3788/fgxb20183911.1505 |
| 英文摘要 | The in-situ reduction method was successfully used to prepare the uniform and ultrathin gold shell-coated NSA nanostructures. The microstructure and composition characterizations such as XRD, TEM, EDX, HRTEM-HAADF, mapping as well as absorption spectra data indicated that the average thicknesses of SiO2 shell and gold nanoshell are about 5 nm and 2 nm, respectively. Under the excitation of a CW diode laser of 980 nm, the dependence of the upconversion fluorescence intensity of the core-shell structure on the concentration of chloroauric acid was systematically investigated. The steady-state spectral results show that the red and green upconversion luminescence intensities of NS samples are 2.8 times enhanced simultaneously by coating the gold shell. The upconversion lifetime of the red and green emission levels before and after the gold shell cladding is obtained by fitting the fluorescence decay curves. The mechanism of enhanced upconversion fluorescence by the surface plasmons is discussed based on the spectral analysis and FDTD method simulation. 2018, Science Press. All right reserved. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/60596]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | An, Xi-Tao,Wang, Yue,Mu, Jia-Jia,et al. Controllable Synthesis and Surface-enhanced Upconversion Luminescence of Ultra-thin Gold Shell Coated NaYF4: Yb, Er@SiO2 Nanostructures[J]. Faguang Xuebao/Chinese Journal of Luminescence,2018,39(11):1505-1512. |
| APA | An, Xi-Tao.,Wang, Yue.,Mu, Jia-Jia.,Li, Jing.,Zhang, Li-Gong.,...&Chen, Li.(2018).Controllable Synthesis and Surface-enhanced Upconversion Luminescence of Ultra-thin Gold Shell Coated NaYF4: Yb, Er@SiO2 Nanostructures.Faguang Xuebao/Chinese Journal of Luminescence,39(11),1505-1512. |
| MLA | An, Xi-Tao,et al."Controllable Synthesis and Surface-enhanced Upconversion Luminescence of Ultra-thin Gold Shell Coated NaYF4: Yb, Er@SiO2 Nanostructures".Faguang Xuebao/Chinese Journal of Luminescence 39.11(2018):1505-1512. |
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