Synthesis and characterisations of Au-nanoparticle-doped TiO sub(2) and CdO thin films

In the present study, pure and gold nanoparticle (Au NP)-doped titanium dioxide (TiO sub(2)) and cadmium oxide (CdO) thin film were prepared by the sol-gel method, and the effect of Au NP doping on the optical, structural and morphological properties of these thin films was investigated. The prepare...

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Bibliographic Details
Published in:The Journal of physics and chemistry of solids 2014-06, Vol.75 (6), p.775-781
Main Authors: Gueltekin, Aytac, Karanfil, Gamze, Oezel, Faruk, Kus, Mahmut, Say, Ridvan, Sonmezoglu, Savas
Format: Article
Language:English
Subjects:
Cadmium
Doping
Gold
Optical properties
Scanning electron microscopy
Thin films
Titanium dioxide
X-ray diffraction
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Summary:In the present study, pure and gold nanoparticle (Au NP)-doped titanium dioxide (TiO sub(2)) and cadmium oxide (CdO) thin film were prepared by the sol-gel method, and the effect of Au NP doping on the optical, structural and morphological properties of these thin films was investigated. The prepared thin films were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM) and ultraviolet-visible-near infrared (UV-Vis-NIR) spectra. While the optical band increases from 3.62 to 3.73 for TiO sub(2) thin films, it decreases from 2.20 to 1.55 for CdO thin films with increasing Au doping concentration. Analysis of XRD indicates that the intensities of peaks of the crystalline phase have increased with the increasing Au NP concentrations in all thin films. SEM images demonstrate that the surface morphologies of the samples were affected by the incorporation of Au NPs. Consequently, the most significant results of the present study are that the Au NPs can be used to modify the optical, structural and morphological properties of TiO sub(2) and CdO thin films.
ISSN:0022-3697
DOI:10.1016/j.jpcs.2014.01.011