Title
Gold clusters on <tex>$WO_{3}$</tex> nanoneedles grown via AACVD : XPS and TEM studies Gold clusters on <tex>$WO_{3}$</tex> nanoneedles grown via AACVD : XPS and TEM studies
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lausanne ,
Subject
Physics
Chemistry
Source (journal)
Materials chemistry and physics. - Lausanne, 1983, currens
Volume/pages
134(2012) :2/3 , p. 809-813
ISSN
0254-0584
ISI
000305918200038
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We have prepared tungsten oxide films decorated with gold particles on Si substrates by aerosol assisted chemical vapor deposition (AACVD) and characterized them using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). SEM shows that the films are composed of needle-like structures and TEM shows that both the needles and the gold particles are crystalline. XPS indicates the presence of oxygen vacancies, i.e. the films are WO3−x, and hence the deposited material is composed of semiconducting nanostructures and that the interaction between the gold particles and the WO3 needles surface is weak. The synthesis of semiconducting tungsten oxide nanostructures decorated with metal particles represents an important step towards the development of sensing devices with optimal properties.
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