Effect of Silver Addition on the Ethanol-Sensing Properties of Indium Oxide Nanoparticle Layers: Optical Absorption Study

Singh, Vidya Nand; Mehta, Bodh Raj; Joshi, Rakesh Kumar; Kruis, Frank Einar

doi:https://doi.org/10.1155/2007/28031

Journal of Nanomaterials

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Surface Nanoscience

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Research Article | Open Access

Volume 2007 | Article ID 028031 | https://doi.org/10.1155/2007/28031

Effect of Silver Addition on the Ethanol-Sensing Properties of Indium Oxide Nanoparticle Layers: Optical Absorption Study

Vidya Nand Singh,¹Bodh Raj Mehta,¹Rakesh Kumar Joshi,²and Frank Einar Kruis²

Academic Editor: Masamichi Yoshimura

Received21 Dec 2006

Accepted11 Mar 2007

Published26 Apr 2007

Abstract

In2O3 and In2O3:Ag nanoparticle layers have been deposited using a two-step method consisting of chemical capping and dip coating techniques. The result of optical absorption analysis of In2O3:Ag samples shows the presence of Ag2O and Ag in air-annealed and vacuum-annealed samples, respectively. These results have been correlated with the gas sensing properties of these layers towards ethanol and support the proposed mechanism that increase in sensor response on Ag addition is due to the conversion of Ag2O to Ag in the presence of ethanol.

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Copyright

Copyright © 2007 Vidya Nand Singh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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