Structural, optical properties and optical modelling of hydrothermal chemical growth derived ZnO nanowires

Hin On Chu, Quan Wang, Yong-jing Shi*, Shi-geng Song, Wei-guo Liu, Shun Zhou, Des Gibson, Yahya Alajlani, Cheng Li

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    26 Citations (Scopus)
    83 Downloads (Pure)

    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.
    Original languageEnglish
    Pages (from-to)191-199
    Number of pages9
    JournalTransactions of Nonferrous Metals Society of China
    Volume30
    Issue number1
    DOIs
    Publication statusPublished - 21 Jan 2020

    Keywords

    • ZnO
    • Nanowires
    • Hydrothermal synthesis
    • Optical modelling

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