Growth and branching of CuO nanowires by thermal oxidation of copper

被引：244
作者：
Kaur, M
Muthe, KP
Despande, SK
Choudhury, S
Singh, JB
Verma, N
Gupta, SK [1 ]
Yakhmi, JV
机构：
[1] Bhabha Atom Res Ctr, Tech Phys & Prototype Engn Div, Bombay 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Inter Univ Consortium, Mumbai Ctr, Bombay 400085, Maharashtra, India
[3] Bhabha Atom Res Ctr, Novel Mat & Struct Chem Div, Bombay 400085, Maharashtra, India
[4] Bhabha Atom Res Ctr, Div Mat Sci, Bombay 400085, Maharashtra, India
[5] Punjab Univ, Chandigarh 160014, India
来源：
JOURNAL OF CRYSTAL GROWTH | 2006年 / 289卷 / 02期
关键词：
bandgap; nanostructures; optical absorption; scanning electron microscopy; thermal oxidation; CuO; nanowires; semiconducting materials;
D O I：
10.1016/j.jcrysgro.2005.11.111
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
CuO nanowires have been synthesized by thermal oxidation of copper foils in oxygen atmosphere. Morphology and microstructure of the nanowires was studied as a function of temperature and annealing time using scanning electron microscopy, energy dispersive X-ray analysis, X-ray diffractogram, X-ray photoelectron spectroscopy, transmission electron microscopy and selected area electron diffraction. Nanowires were found to grow preferentially along [010] direction. Length of nanowires was seen to increase with annealing time and for long times branched structure was observed. A "blue-shift" in comparison to bulk CuO was observed in the band gap as determined from optical absorption spectra. Mechanism of growth of CuO nanowires is discussed. (c) 2005 Elsevier B.V. All rights reserved.
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收藏
页码：670 / 675
页数：6
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