Size-dependent excitation spectra and energy transfer in Tb3+-doped Y2O3 nanocrystalline

	Size-dependent excitation spectra and energy transfer in Tb3+-doped Y2O3 nanocrystalline
其他题名	论文其他题名
	Meng Q. Y.; Chen B. J.; Xu W.; Yang Y. M.; Zhao X. X.; Di W. H.; Lu S. Z.; Wang X. J.; Sun J. S.; Cheng L. H.; Yu T.; Peng Y.
	2007
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	102 期号:9
摘要	Nanocrystal Y2O3 powders with different grain sizes and various doping concentrations of Tb3+ were prepared by an autocombustion reaction. The size and surface effects on the 4f-5d transitions and energy transfers between Tb3+ ions were studied by using x-ray diffraction, transmission electron microscopy, fluorescent spectra, and luminescent decay. It was found that the excitation spectra are composed of two parts: one is the contribution from the Tb3+ at/near the nanoparticle surfaces; another is from the Tb3+ inside the nanoparticles. The study on the concentration quenching and luminescent decay indicated that the energy transfers depopulating the D-5(3) and D-5(4) level were assigned to the mechanisms of electric dipole-dipole and exchange interaction, respectively. The size confinement greatly affects the energy transfer quenching the emission from the D-5(3) level, but slightly affects the energy transfer quenching the emission from the D-5(4) level. (C) 2007 American Institute of Physics.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/24896
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. Size-dependent excitation spectra and energy transfer in Tb3+-doped Y2O3 nanocrystalline[J]. Journal of Applied Physics,2007,102(9).
APA	Meng Q. Y..,Chen B. J..,Xu W..,Yang Y. M..,Zhao X. X..,...&Peng Y..(2007).Size-dependent excitation spectra and energy transfer in Tb3+-doped Y2O3 nanocrystalline.Journal of Applied Physics,102(9).
MLA	Meng Q. Y.,et al."Size-dependent excitation spectra and energy transfer in Tb3+-doped Y2O3 nanocrystalline".Journal of Applied Physics 102.9(2007).

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