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Synthesis and Optical Properties of Silicon Oxide Nanowires

Published online by Cambridge University Press:  01 February 2011

Bernard Gelloz
Affiliation:
Institut de Recherche Interdisciplinaire (IRI), Institut de Recherche Interdisciplinaire (IRI), IRI c/o IEMN, Cité Scientifique, Avenue Poincaré-B.P.60069, Villeneuve d'Ascq, N/A, France, Metropolitan, +33 3 20 19 79 87
Yannick Coffinier
Affiliation:
[email protected], Institut de Recherche Interdisciplinaire (IRI), IRI c/o IEMN, Cité Scientifique, Avenue Poincaré - B.P. 60069, Villeneuve d'Ascq, 59652, France
Billel Salhi
Affiliation:
[email protected], Institut de Recherche Interdisciplinaire (IRI), IRI c/o IEMN, Cité Scientifique, Avenue Poincaré - B.P. 60069, Villeneuve d'Ascq, 59652, France
Nobuyoshi Koshida
Affiliation:
[email protected], Tokyo University of Agriculture and Technology, Graduate School of Engineering, 2-24-16, Nakacho, Koganei,, Tokyo, 184-8588, Japan
Gilles Patriarche
Affiliation:
[email protected], Laboratoire de Photonique et de Nanostructures, route de Nozay, Marcoussis, 91460, France
Rabah Boukherroub
Affiliation:
[email protected], Institut de Recherche Interdisciplinaire (IRI), IRI c/o IEMN, Cité Scientifique, Avenue Poincaré - B.P. 60069, Villeneuve d'Ascq, 59652, France
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Abstract

The paper reports on the synthesis and structural characterization of amorphous silicon oxide nanowires (SiONWs). The nanowires were prepared using the solid-liquid-solid (SLS) technique and display an average mean diameter in the range of 20-150 nm and 15-20 μm in length. Energy dispersive spectrometry (EDS) analysis revealed that the nanowires consist of Si and O elements in a ratio of approximately 1:2. The result was corroborated by the presence of a single peak at around 103 eV in the X-ray photoelectron (XPS) spectrum. As-prepared SiONWs display blue photoluminescence (PL) centered ∼ 400 nm. The blue luminescence is inhomogeneous with an increase in the PL peak intensity by a factor of 1.8 at certain areas of the surface. Next, we have investigated the effect of high-pressure water vapor annealing (HWA) on the PL and found that while the PL became homogeneous, a decrease of its intensity by a factor 2 was observed. The origin of the blue emission could be attributed to defect centers of oxygen deficiency in the wires.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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References

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