Low-temperature synthesis of novel ZnO nanowire microspheres on silicon substrates

被引:4
|
作者
Li Xinyu [1 ]
Guo Jian [1 ]
Ding Shulong [1 ]
Lin Tiejun [1 ]
Dong Jingtao [1 ]
机构
[1] Xiangtan Univ, Coll Mat & Photoelect Phys, Xiangtan 411105, Peoples R China
关键词
self-catalyst; ZnO nanowire microspheres; photoluminescence; nanowires;
D O I
10.1016/S1001-0521(07)60209-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Microspheres covered with ZnO nanowires were fabricated by oxidative evaporation of pure zinc powder without catalyst at 450 degrees C. X-ray diffraction (XRD) demonstrates that the as-obtained sample can be indexed to high crystallinity with wurtzite structure. The structural features associated with different growth stages were monitored using scanning electron microscope (SEM), which described the direct observation nucleation and growth process. Meanwhile, room temperature photoluminescence (PL) spectrum showed a UV emission at similar to 388 nm and a broad green emission at similar to 505 nm. The ZnO nanowires with the self-catalyzed growth mechanism were discussed in detail.
引用
收藏
页码:242 / 246
页数:5
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