Structural, optical properties and optical modelling of hydrothermal chemical growth derived ZnO nanowires
| Autor: | Des Gibson, Shigeng Song, Y. Alajlani, Cheng Li, Weiguo Liu, Wang Quan, Shun Zhou, Hin On Chu, Yongjing Shi |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Scanning electron microscope Band gap Metals and Alloys Nanowire 02 engineering and technology 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure 01 natural sciences Hydrothermal circulation Light scattering Chemical engineering 0103 physical sciences Materials Chemistry Hydrothermal synthesis Thin film 0210 nano-technology |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 30:191-199 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(19)65191-5 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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