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	Tailoring of polar and nonpolar ZnO planes on MgO (001) substrates through molecular beam epitaxy
	Zhou, Hua ; Wang, Hui-Qiong ; Liao, Xia-Xia ; Zhang, Yufeng ; Zheng, Jin-Cheng ; Wang, Jia-Ou ; Muhemmed, Emin ; Qian, Hai-Jie ; Ibrahim, Kurash ; Chen, Xiaohang ; Chen XH(陈晓航) ; Zhan, Huahan ; Kang, Junyong ; Kang JY(康俊勇)
	2012-03-09
关键词	ZnO MgO polar nonpolar RHEED XRD XAS
英文摘要	Polar and nonpolar ZnO thin films were deposited on MgO (001) substrates under different deposition parameters using oxygen plasma-assisted molecular beam epitaxy (MBE). The orientations of ZnO thin films were investigated by in situ reflection high-energy electron diffraction and ex situ X-ray diffraction (XRD). The film roughness measured by atomic force microscopy evolved as a function of substrate temperature and was correlated with the grain sizes determined by XRD. Synchrotron-based X-ray absorption spectroscopy (XAS) was performed to study the conduction band structures of the ZnO films. The fine structures of the XAS spectra, which were consistent with the results of density functional theory calculation, indicated that the polar and nonpolar ZnO films had different electronic structures. Our work suggests that it is possible to vary ZnO film structures from polar to nonpolar using the MBE growth technique and hence tailoring the electronic structures of the ZnO films. PACS: 81; 81.05.Dz; 81.15.Hi.; Specialized Research Fund for the Doctoral Program of Higher Education [20090121120028, 20100121120026]; Natural Science Foundation of Fujian Province, China [2010J05138]; Program for New Century Excellent Talents in University (NCET) [NCET-09-0680]
语种	英语
出版者	SPRINGER
内容类型	期刊论文
源URL	[http://dx.doi.org/10.1186/1556-276X-7-184]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Zhou, Hua,Wang, Hui-Qiong,Liao, Xia-Xia,et al. Tailoring of polar and nonpolar ZnO planes on MgO (001) substrates through molecular beam epitaxy[J],2012.
APA	Zhou, Hua.,Wang, Hui-Qiong.,Liao, Xia-Xia.,Zhang, Yufeng.,Zheng, Jin-Cheng.,...&康俊勇.(2012).Tailoring of polar and nonpolar ZnO planes on MgO (001) substrates through molecular beam epitaxy..
MLA	Zhou, Hua,et al."Tailoring of polar and nonpolar ZnO planes on MgO (001) substrates through molecular beam epitaxy".(2012).

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