Abstract
In this Letter, we report on the structural and optical characteristics of ZnO films with a wurtzite structure grown on MgO (001) substrates with cubic structures. The ZnO films were prepared through the molecular beam epitaxy method, and growth orientation transformation from [0001] to [10–10] direction was observed with the change of growth temperature and thickness. The x-ray diffraction pole figures and in situ RHEED patterns demonstrated that the rotational relationship among grains within the ZnO films appeared in a typical two-fold rotation of about 30° for the [0001] growth orientation and four-fold rotation of about 30° or 60° for the [10–10] growth orientation, respectively. Last, we investigated their optical properties through measuring the transmission and photoluminescence spectra of the ZnO films, which showed the bulk-like bandgap feature of the ZnO films in spite of the existing growth orientation transformation.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Dai Osabe, Hideo Seyama, and Kunisuke Maki
Appl. Opt. 41(4) 739-746 (2002)
X. Y. Chen, X. H. Pan, W. Chen, S. S. Chen, J. Y. Huang, and Z. Z. Ye
Opt. Lett. 41(20) 4727-4730 (2016)
Xun Yang, Chong-Xin Shan, Ying-Jie Lu, Xiu-Hua Xie, Bing-Hui Li, Shuang-Peng Wang, Ming-Ming Jiang, and De-Zhen Shen
Opt. Lett. 41(4) 685-688 (2016)