Controllable Synthesis and Surface-enhanced Upconversion Luminescence of Ultra-thin Gold Shell Coated NaYF4: Yb, Er@SiO2 Nanostructures

doi:10.3788/fgxb20183911.1505

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	Controllable Synthesis and Surface-enhanced Upconversion Luminescence of Ultra-thin Gold Shell Coated NaYF4: Yb, Er@SiO2 Nanostructures
	An, Xi-Tao; Wang, Yue; Mu, Jia-Jia; Li, Jing; Zhang, Li-Gong; Luo, Yong-Shi; Chen, Li
	2018
发表期刊	Faguang Xuebao/Chinese Journal of Luminescence
ISSN	10007032
卷号	39 期号:11 页码:1505-1512
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.
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
DOI	10.3788/fgxb20183911.1505
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	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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