Evolution of wurtzite ZnO films on cubic MgO (001) substrates: A structural, optical, and electronic investigation of the misfit structures

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	Evolution of wurtzite ZnO films on cubic MgO (001) substrates: A structural, optical, and electronic investigation of the misfit structures
	Zhou, Hua ; Wang, Hui-Qiong ; Li, Yaping ; Li, Kongyi ; Kang, Junyong ; Zheng, Jin-Cheng ; Jiang, Zheng ; Huang, Yuying ; Wu, Lijun ; Zhang, Lihua ; Kisslinger, Kim ; Zhu, Yimei ; Zhou H(周华) ; Wang HQ(王惠琼) ; Kang JY(康俊勇) ; Zheng JC(郑金成)
刊名	http://dx.doi.org/10.1021/am503256p
	2014
关键词	Bond length Epitaxial growth Magnesia Metallic films Molecular beam epitaxy Substrates Transmission electron microscopy X ray absorption X ray diffraction Zinc oxide Zinc sulfide
英文摘要	We investigated the interface between hexagonal ZnO films and cubic MgO (001) substrates, fabricated via molecular beam epitaxy. X-ray diffraction and (scanning) transmission electron microscopy revealed that growth follows the single [0001] direction when the temperature of the substrate is above 200 °C, while when the substrate temperature is below 150 °C, growth initially is along [0001] and then mainly changes to [0-332] variants beyond a thickness of ～10 nm. Interestingly, a double-domain feature with a rotational angle of 30° appears during growth along [0001] regardless of the temperature, experimentally demonstrating the theoretical predictions for the occurrence of double rotational domains in such a heteroepitaxy [Grundmann et al., Phys. Rev. Lett. 105, 146102 (2010)]. We also found that the optical properties of the ZnO film are influenced greatly by the mutation of growth directions, stimulated by the bond-length modulations, as we determined from X-ray absorption spectra at Zn K edge. These results also showed the evolution of the 4pxy and 4pz states in the conduction band with the rise in the temperature for growth. We consider that our findings may well promote the applications of ZnO in advanced optoelectronics for which its integration with other materials of different phases is desirable. ? 2014 American Chemical Society.
语种	英语
出版者	American Chemical Society
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89753]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Zhou, Hua,Wang, Hui-Qiong,Li, Yaping,et al. Evolution of wurtzite ZnO films on cubic MgO (001) substrates: A structural, optical, and electronic investigation of the misfit structures[J]. http://dx.doi.org/10.1021/am503256p,2014.
APA	Zhou, Hua.,Wang, Hui-Qiong.,Li, Yaping.,Li, Kongyi.,Kang, Junyong.,...&郑金成.(2014).Evolution of wurtzite ZnO films on cubic MgO (001) substrates: A structural, optical, and electronic investigation of the misfit structures.http://dx.doi.org/10.1021/am503256p.
MLA	Zhou, Hua,et al."Evolution of wurtzite ZnO films on cubic MgO (001) substrates: A structural, optical, and electronic investigation of the misfit structures".http://dx.doi.org/10.1021/am503256p (2014).