Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 30    No. 1    January 2020

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Structural, optical properties and optical modelling of hydrothermal chemical growth derived ZnO nanowires
Hin On CHU1, Quan WANG2, Yong-jing SHI3, Shi-geng SONG1, Wei-guo LIU2, Shun ZHOU2, Des GIBSON1, Yahya ALAJLANI4, Cheng LI5

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

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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