Growth Habit of Polar Crystal ZnO by Solid-vapor Method

Crystals of semiconductor ZnO were fabricated by means of solid-vapor growth method-carbon thermal reduction. Powder X-ray diffraction and field emission scanning electron microscope were used to characterize the phase and morphology of the samples. The results showed that the samples were wurtzite...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2011-02, Vol.26 (1), p.19-22
Main Authors: Ma, Shufang, Liang, Jian, Liu, Xuguang, Zhao, Junfu, Xu, Bingshe
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Crystals
Field emission
Materials Science
Morphology
Polyhedrons
Scanning electron microscopy
Semiconductors
Tetrahedrons
Zinc oxide
场发射扫描电子显微镜
晶体生长过程
气相法
氧化锌晶体
温度依赖
生长习性
负离子配位多面体
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Summary:Crystals of semiconductor ZnO were fabricated by means of solid-vapor growth method-carbon thermal reduction. Powder X-ray diffraction and field emission scanning electron microscope were used to characterize the phase and morphology of the samples. The results showed that the samples were wurtzite ZnO crystals and anisotropy of crystal growth relied on reaction temperature in solid-vapor process. The crystals synthesized at different temperatures were of short column-like shape, flat top hexagon pyramidal-like shape and polyhedron shape. The growth mechanisms of the above three kinds of crystal were consistent with the theory of growth basic structural unit of negative ion coordination polyhedron. At first, Zn2＋ and four O2- form [Zn-O4]6- coordination tetrahedron at any temperature. Then, tetrahedrons stack in different ways into different morphology crystal at different temperatures.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-011-0159-7