Cubic ZnO films obtained at low pressure by molecular beam epitaxy*
Wang Xiao-Dan, Zhou Hua, Wang Hui-Qiong†, Ren Fei, Chen Xiao-Hang, Zhan Hua-Han, Zhou Ying-Hui, Kang Jun-Yong
       
(a) UV–vis transmission spectrum of the ZnO film with the two band edge transmissions at the wavelengths of 280 nm and 390 nm, respectively. (b) XRD patterns of the MgO substrate and the ZnO film.