Quadra-Twin Model for Growth of Nanotetrapods and Related Nanostructures

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• 作者：Zhuang Liu ; Xitian Zhang ; Sui Kong Hark
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：June 19, 2008
• 年：2008
• 卷：112
• 期：24
• 页码：8912 - 8916
• 全文大小：1059K
• 年卷期：v.112,no.24(June 19, 2008)
• ISSN：1932-7455

文摘

We fabricated ZnCdSe alloy three-bladed nanoarrowheads (TBNAs) on GaAs (001) substrates by metalorganic chemical vapor deposition. On the basis of crystallographic analyses of their structure, we found that they are closely related to nanotetrapods, despite the apparent difference in morphology. A new quadra-twin core model is proposed to understand the growth of TBNAs. This model also agrees with reported results of a subclass of nanotetrapods that cannot be explained by conventional zinc blende and octa-twin core models. Furthermore, a simple method to distinguish the core structures by TEM is suggested.