中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 30 No. 1 January 2020 |
（1. Institute of Thin Films, Sensors and Imaging, University of the West of Scotland, Paisley, PA1 2BE, United Kingdom;
2. Institute of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710021, China;
3. School of Metallurgy and Material Engineering, Chongqing University of Science and Technology, Chongqing 401331, China;
4. Department of Physics, Faculty of Science, Jazan University, Jazan, Saudi Arabia;
5. School of Energy and Power, Institute of Energy and Power Technology, Changchun Institute of Technology, Changchun 130103, China）
Abstract:ZnO nanowire films were produced at 90 °C using a hydrothermal chemical deposition method, and were characterised with scanning electron microscopy, optical transmission spectrometry and X-ray diffraction. The results showed that the optical band gap is 3.274-3.347 eV. Film porosity and microstructure can be controlled by adjusting the pH of the growth solution. ZnO nanowire films comprise a 2-layer structure as demonstrated by SEM analysis, showing different porosities for each layer. XRD analysis shows preferential growth in the (002) orientation. A comprehensive optical modelling method for nanostructured ZnO thin films was proposed, consisting of Bruggeman effective medium approximations, rough surface light scattering and O''''Leary-Johnson-Lim models. Fitted optical transmission of nanostructured ZnO films agreed well with experimental data.
Key words: ZnO; nanowires; hydrothermal synthesis; optical modelling
