Amorphous silica nanowires grown by the vapor-solid mechanism

    Authors

    K. H. Lee; S. W. Lee; R. R. Vanfleet;W. Sigmund

    Comments

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    Abbreviated Journal Title

    Chem. Phys. Lett.

    Keywords

    SEMICONDUCTOR NANOWIRES; CARBON; PHOTOLUMINESCENCE; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

    Abstract

    Silica nanowires were synthesized by using silica nanoparticles as a growth catalyst using a gas composed of CH4 and H-2 at 1050degreesC. Silica nanoparticles provide silicon and oxygen atoms for the formation of the nanowires, as well acting as a growth site. The nanowires nucleated on graphitic carbon layers formed around the seed particles, indicating that the nanowires grow by the vapor-solid mechanism. Photoluminescence spectra of the nanowires normally showed strong blue emission peaked at 3.1 and 2.8 eV under 3.8 eV laser excitation. Post-hydrogen annealing resulted in the appearance of longer wavelength photoluminescence band. (C) 2003 Elsevier B.V. All rights reserved.

    Journal Title

    Chemical Physics Letters

    Volume

    376

    Issue/Number

    3-4

    Publication Date

    1-1-2003

    Document Type

    Article

    Language

    English

    First Page

    498

    Last Page

    503

    WOS Identifier

    WOS:000185168000035

    ISSN

    0009-2614

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