Photoluminescence of colloidal YVO4:EU/SiO2 core/shell nanocrystals

	Photoluminescence of colloidal YVO4:EU/SiO2 core/shell nanocrystals
其他题名	论文其他题名
	Wang Y.; Qin W. P.; Zhang L. S.; Cao C. Y.; Lu S. Z.; Ren X. G.
	2009
发表期刊	Optics Communications
ISSN	0030-4018
卷号	282 期号:6 页码:1148-1153
摘要	YVO4:Eu, and YVO4:EU/SiO2 nanocrystals (NCs) were prepared by hydrothermal method with citrate as capping ligands. Their morphologies, structures, components, and photoluminescence properties were investigated and presented in this paper. A remarkable fluorescence enhancement up to 2.17 times was observed in colloidal YVO4:Eu/SiO2 NCs, compared to that of colloidal YVO4:Eu NCs. This is mainly attributed to the formation of the outer protecting layers of biocompatible SiO2 shells; which shield the EU3+ ions effectively from water and thus reduces the deleterious effects of water on the luminescence. Meanwhile, on the basis of laser selective excitation, two kinds of luminescent centers were confirmed in the NCs. namely, inner Eu3+ ions and surface EU3+ ions. The surface modifications for YVO4:Eu NCs effectively reduced the surface defects and accordingly enhanced the luminescence. The core/shell NCs exhibited long fluorescence lifetime and high photostability under ultraviolet radiation. (c) 2008 Elsevier B.V. All rights reserved.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26221
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang Y.,Qin W. P.,Zhang L. S.,et al. Photoluminescence of colloidal YVO4:EU/SiO2 core/shell nanocrystals[J]. Optics Communications,2009,282(6):1148-1153.
APA	Wang Y.,Qin W. P.,Zhang L. S.,Cao C. Y.,Lu S. Z.,&Ren X. G..(2009).Photoluminescence of colloidal YVO4:EU/SiO2 core/shell nanocrystals.Optics Communications,282(6),1148-1153.
MLA	Wang Y.,et al."Photoluminescence of colloidal YVO4:EU/SiO2 core/shell nanocrystals".Optics Communications 282.6(2009):1148-1153.

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