Study on Upconversion Luminescence and Luminescent Dynamics of 20%Yb3+, 0.5%Tm3+ Co-Doped YF3 and GdF3 Nanocrystals

	Study on Upconversion Luminescence and Luminescent Dynamics of 20%Yb3+, 0.5%Tm3+ Co-Doped YF3 and GdF3 Nanocrystals
	Cao C. Y.; Qin W. P.; Zhang J. S.
	2010
发表期刊	Journal of Nanoscience and Nanotechnology
ISSN	1533-4880
卷号	10 期号:3 页码:1900-1903
摘要	20%Yb3+, 0.5%Tm3+ co-doped YF3 and GdF3 were synthesized through a facile hydrothermal method. After annealing under an argon atmosphere, the sizes and morphologies of the two samples were characterized by field emission scanning electron microscopy, and the phase and crystallization were analyzed by X-ray diffraction. With a 980 nm continuous wave laser diode as the excitation source, blue and ultraviolet upconversion emissions in the wavelength range of 260-510 nm of Tm3+ and Gd3+/Tm3+ ions were recorded. Under the same excitation conditions, the upconversion emission spectra of the two nanocrystals were compared and analyzed. Gd3+ in the ground state cannot absorb 980 nm photons directly because of the large energy gap between the ground state S-8(7/2) and the first excited state P-6(7/2). In the 20%Yb3+, 0.5%Tm3+ co-doped GdF3 nanocrystals, the excited state I-6(J) of Gd3+ can be populated through the energy transfer P-3(2) -> H-3(6) (Tm3+): S-8(7/2) -> I-6(J)(Gd3+), meaning that Yb3+ acted as primary sensitizers and Tm3+ acted as secondary sensitizers, transferred energies to host material Gd3+ and resulted in the ultraviolet upconversion emission of the host ions. In this article, the upconversion luminescent dynamics were studied at the onset of a 980 nm pulsed laser from an optical parametric oscillator pumped by a 10 ns pulsed Nd:YAG laser, too.
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/181722/34078
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Cao C. Y.,Qin W. P.,Zhang J. S.. Study on Upconversion Luminescence and Luminescent Dynamics of 20%Yb3+, 0.5%Tm3+ Co-Doped YF3 and GdF3 Nanocrystals[J]. Journal of Nanoscience and Nanotechnology,2010,10(3):1900-1903.
APA	Cao C. Y.,Qin W. P.,&Zhang J. S..(2010).Study on Upconversion Luminescence and Luminescent Dynamics of 20%Yb3+, 0.5%Tm3+ Co-Doped YF3 and GdF3 Nanocrystals.Journal of Nanoscience and Nanotechnology,10(3),1900-1903.
MLA	Cao C. Y.,et al."Study on Upconversion Luminescence and Luminescent Dynamics of 20%Yb3+, 0.5%Tm3+ Co-Doped YF3 and GdF3 Nanocrystals".Journal of Nanoscience and Nanotechnology 10.3(2010):1900-1903.

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