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  • Tuned structures and enhanced photoluminescence of WO3-x nanomaterials by TiO2

    Author(s)
    Wang, BB
    Zhong, XX
    Zhu, J
    Wang, Y
    Zhang, Y
    Cvelbar, U
    Ostrikov, K
    Griffith University Author(s)
    Ostrikov, Ken
    Year published
    2022
    Metadata
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    Abstract
    Different structured WO3-x nanomaterials were synthesized in ethanoic acid using the WCl6 and Ti(OC4H9)4 precursors. Advanced characterizations reveal that the incorporation of TiO2 leads to the granulation and structural conversion of WO3-x due to the reduction of surface tension on the WO3-x nanoparticles (NPs) and the fast nucleation of the WO3-x NPs caused by the adsorption of Ti(OC4H9)4 molecules on the WO3-x NPs. The photoluminescence (PL) studies indicate that the WO3-x − TiO2 hybrid nanomaterials generate ultraviolet, blue, green, red and near-infrared emissions, and that the PL emission is remarkably enhanced. The ...
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    Different structured WO3-x nanomaterials were synthesized in ethanoic acid using the WCl6 and Ti(OC4H9)4 precursors. Advanced characterizations reveal that the incorporation of TiO2 leads to the granulation and structural conversion of WO3-x due to the reduction of surface tension on the WO3-x nanoparticles (NPs) and the fast nucleation of the WO3-x NPs caused by the adsorption of Ti(OC4H9)4 molecules on the WO3-x NPs. The photoluminescence (PL) studies indicate that the WO3-x − TiO2 hybrid nanomaterials generate ultraviolet, blue, green, red and near-infrared emissions, and that the PL emission is remarkably enhanced. The emissions can be attributed to the band − band, defect state − state and defect level − band transitions. The substantial PL enhancement originates from trapping the strong PL emission from TiO2 by the WO3-x nanomaterials.
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    Journal Title
    Materials Science and Engineering B: Solid-State Materials for Advanced Technology
    Volume
    275
    DOI
    https://doi.org/10.1016/j.mseb.2021.115516
    Subject
    Chemical sciences
    Engineering
    Physical sciences
    Publication URI
    http://hdl.handle.net/10072/411501
    Collection
    • Journal articles

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