Hydrothermal synthesis and photoluminescent properties of ZnO sub-micrometer and micrometer rods

	Hydrothermal synthesis and photoluminescent properties of ZnO sub-micrometer and micrometer rods
其他题名	论文其他题名
	Fan L. B.; Song H. W.; Yu L. X.; Liu Z. X.; Yang L. M.; Pan G. H.; Bai X.; Lei Y. Q.; Wang T.; Zheng Z. H.; Kong X. G.
	2007
发表期刊	Optical Materials
ISSN	0925-3467
卷号	29 期号:5 页码:532-538
摘要	ZnO sub-micrometer and micrometer rods with hexagonal structure were synthesized by the hydrothermal method and characterized by X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM) images and Raman spectra. Their luminescent properties including room-temperature emission spectra, fluorescent dynamics and temperature dependence of luminescence were studied. The results indicated that, as Zn(No-3)(2) center dot 6H(2)O and NaOH satisfied the stoichiometric ratio (1:2) in precursor solution, the ZnO rods were with an average diameter of 100 nm and length of 1 mu m. As NaOH was insufficient or excessive, both diameter and length of the rods increased significantly. And more, a large number of defect states were involved, which greatly affected the photoluminescent properties of ZnO rods. The ultraviolet (UV) emission of excitons (3.2 eV) and visible emission (2.0 eV) from deep levels (DLs) of defects were observed. As NaOH was insufficient or excessive, the relative intensity of the defect emission increased, while that of the exciton emission decreased. The lifetimes of the excitons decreased with the increase of DLs. Two decay components were observed for the fluorescent dynamics of DLs. According to temperature-dependent luminescence, some important parameters were obtained and compared, such as the Einstein temperature for the excitons, the thermal activation energy of excitons or DLs etc. (c) 2005 Elsevier B.V. All rights reserved.
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/181722/26521
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Fan L. B.,Song H. W.,Yu L. X.,et al. Hydrothermal synthesis and photoluminescent properties of ZnO sub-micrometer and micrometer rods[J]. Optical Materials,2007,29(5):532-538.
APA	Fan L. B..,Song H. W..,Yu L. X..,Liu Z. X..,Yang L. M..,...&Kong X. G..(2007).Hydrothermal synthesis and photoluminescent properties of ZnO sub-micrometer and micrometer rods.Optical Materials,29(5),532-538.
MLA	Fan L. B.,et al."Hydrothermal synthesis and photoluminescent properties of ZnO sub-micrometer and micrometer rods".Optical Materials 29.5(2007):532-538.

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