Spontaneous growth and luminescence of Si/SiOx core-shell nanowires

被引:23
|
作者
Wu, CF [1 ]
Qin, WP
Qin, GS
Zhao, D
Zhang, JS
Xu, W
Lin, HY
机构
[1] Chinese Acad Sci, Key Lab Excited State Proc, Changchun 130033, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130022, Peoples R China
关键词
D O I
10.1016/j.cplett.2003.08.005
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Silicon nanowires were prepared by a thermal evaporation Of MoSi2 heating rods under controlled temperature and atmosphere. Transmission electron microscopy and selected area electron diffraction show that the nanowire consists of a crystalline Si core and an amorphous SiOx shell. There exist two major forms of nanowires possessing different morphologies and growth directions, which may indicate that different mechanisms predominate in the growth process. The photoluminescence of the Si/SiOx core-shell nanowires presents two emission bands, around 550 and 600 nm, respectively. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:368 / 373
页数:6
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