Study on Concentration Quenching and Energy Transfer in Ln(3+) (Ln=Tb, Tm, Eu) inY(2)O(3) Nanocrystal Powders

	Study on Concentration Quenching and Energy Transfer in Ln(3+) (Ln=Tb, Tm, Eu) inY(2)O(3) Nanocrystal Powders
其他题名	论文其他题名
	Meng Q. Y.; Chen B. J.; Xu W.; Zhao X. X.; Yang Y. M.; Di W. H.; Wang X. J.
	2009
发表期刊	Spectroscopy and Spectral Analysis
ISSN	1000-0593
卷号	29 期号:1 页码:151-155
摘要	Nano-powders Y2O3 with various particle sizes and different doping concentrations of Ln(Ln=Tb, Tm, Eu) were prepared by using a combustion technique. The bulky powders doped with concentrations corresponding to nano-powders were obtained by annealing the nano-powders at high temperature. The emission spectra, XRD spectra and TEM were used in the present study. The concentration quenching of luminescent centers and energy transfer between luminescent centers in Y2O3 Ln nanocrystal powders were investigated. It was found that the behaviors of luminescence concentration quenching for D-5(4) -> F-7(6) : Tb3+ and D-5(0) -> F-7(2) in nano-powders are similar to that in bulky powders. On the contrary, the quenching concentrations for D-5(3)-> F-7(5) : Tb3+ and D-1(2) -> H-3(4) : Tm3+ are distinctly higher than that in bulk powders. This owes to the size confinement effect, the interface of nanocrystal particles can stop a portion of the energy transfer, which happens in the bulk ones,, between luminescent centers. The size confinement effect can bring different influences to the different types of energy transfer. For instance, it will restrain the energy transfer (governed by electric dipole-dipole interaction) between the ions in long distances, and will hardly affect the energy transfer (governed by exchange interaction) between the ions locating at near intervals.
收录类别	SCI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/25656
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Meng Q. Y.,Chen B. J.,Xu W.,et al. Study on Concentration Quenching and Energy Transfer in Ln(3+) (Ln=Tb, Tm, Eu) inY(2)O(3) Nanocrystal Powders[J]. Spectroscopy and Spectral Analysis,2009,29(1):151-155.
APA	Meng Q. Y..,Chen B. J..,Xu W..,Zhao X. X..,Yang Y. M..,...&Wang X. J..(2009).Study on Concentration Quenching and Energy Transfer in Ln(3+) (Ln=Tb, Tm, Eu) inY(2)O(3) Nanocrystal Powders.Spectroscopy and Spectral Analysis,29(1),151-155.
MLA	Meng Q. Y.,et al."Study on Concentration Quenching and Energy Transfer in Ln(3+) (Ln=Tb, Tm, Eu) inY(2)O(3) Nanocrystal Powders".Spectroscopy and Spectral Analysis 29.1(2009):151-155.

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