Changchun Institute of Optics,Fine Mechanics and Physics,CAS
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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