Title

Amorphous silica nanowires grown by the vapor-solid mechanism

Authors

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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