Luminescence spectroscopy and visible upconversion properties of Er3+ in ZnO nanocrystals

	Luminescence spectroscopy and visible upconversion properties of Er3+ in ZnO nanocrystals
其他题名	论文其他题名
	Wang X.; Kong X. G.; Shan G. Y.; Yu Y.; Sun Y. J.; Feng L. Y.; Chao K. F.; Lu S. Z.; Li Y. J.
	2004
发表期刊	Journal of Physical Chemistry B
ISSN	1520-6106
卷号	108 期号:48 页码:18408-18413
摘要	Er3+-doped ZnO nanocrystals with hexagonal wurtzite structure were prepared by addition of LiOH to Zn-O-Er precursors in ethanol. The well-known green hot band from the H-2(11/2) --> I-4(15/2) transition in the 520 - 540 nm region and Stokes emissions were investigated. And the blue, green, and red upconversion emissions were observed from the annealed samples under near-infrared light (808 nm) excitation. The upconversion emission intensity ratio of the hypersensitive H-2(11/2) --> I-4(15/2) to S-4(3/2) --> I-4(15/2) transition (I-530nm/I-550nm) in the sample annealed at 400degreesC is different from that in the sample annealed at 700degreesC, which is attributed to the variation of the local structure around Er3+ ions. The upconversion emission spectra and the pump power dependence of the luminescence intensities are provided to explain the upconversion mechanisms. These results confirm that visible upconversion emissions of Er3+ in the ZnO nanocrystals are mainly produced via two-photon excited-state absorption (ESA) and energy transfer upconversion (ETU) processes.
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/181722/25094
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang X.,Kong X. G.,Shan G. Y.,et al. Luminescence spectroscopy and visible upconversion properties of Er3+ in ZnO nanocrystals[J]. Journal of Physical Chemistry B,2004,108(48):18408-18413.
APA	Wang X..,Kong X. G..,Shan G. Y..,Yu Y..,Sun Y. J..,...&Li Y. J..(2004).Luminescence spectroscopy and visible upconversion properties of Er3+ in ZnO nanocrystals.Journal of Physical Chemistry B,108(48),18408-18413.
MLA	Wang X.,et al."Luminescence spectroscopy and visible upconversion properties of Er3+ in ZnO nanocrystals".Journal of Physical Chemistry B 108.48(2004):18408-18413.

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