Photoluminescence and wetting behavior of ZnO nanoparticles/nanorods array synthesized by thermal evaporation

    Authors

    Q. Li; Y. Q. Chen; L. B. Luo; L. Wang; Y. Q. Yu;L. Zhai

    Comments

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    Abbreviated Journal Title

    J. Alloy. Compd.

    Keywords

    ZnO nanostructures; Thermal evaporation; Morphology; Photoluminescence; Wetting behavior; SUPERHYDROPHOBIC SURFACES; SOLAR-CELLS; LOW-TEMPERATURE; ZINC OXIDE; NANOSTRUCTURES; EMISSION; FILMS; WATER; HYDROPHOBICITY; PERFORMANCE; Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &; Metallurgical Engineering

    Abstract

    By controlling the deposition rate of Zn atoms, we simultaneously synthesized ZnO particles on the upper surface of a horizontal silicon substrate, and ZnO rods array on its lower surface via a thermal evaporation process. The deposition rate of Zn atoms not only affects the morphologies of the final ZnO products, but also consequently leads to ZnO particles and ZnO rods array that have different photoluminescence properties and wetting behaviors. These two morphological ZnO products have just opposite relative intensities of UV emission to visible emission. ZnO rods array has a water contact angle of 160.3 degrees, while ZnO particles film has a water contact angle of 150.4 degrees, and their wetting behavior changed from the Cassie state to the Wenzel state during the process of droplet evaporation. (C) 2013 Elsevier B.V. All rights reserved.

    Journal Title

    Journal of Alloys and Compounds

    Volume

    560

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    156

    Last Page

    160

    WOS Identifier

    WOS:000316681600025

    ISSN

    0925-8388

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