alexa Modelling of Dynamic Response of WO3 Gas Sensors under CO

Research & Reviews: Journal of Statistics and Mathematical Sciences
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Research Article

Modelling of Dynamic Response of WO3 Gas Sensors under CO

Mehdi Othman1,2, Khalifa Aguir1*, Najeh Mliki2 and Philippe Menini3

1Aix-Marseille Université, CNRS, IM2NP UMR 7334, FS St. Jérôme S152, 13397 Marseille, France

2LMOP, Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 Tunis, Tunisia

3Laboratoire d’Analyses et d’Architecture des Systèmes CNRS, 7 Avenue du Colonel Roche, 31077 Toulouse Cedex 4, France

Corresponding Author:
Khalifa Aguir
Aix-Marseille Université, CNRS, IM2NP UMR 7334, FS St. Jérôme S152, 13397 Marseille, France
E-mail: [email protected]

Received: 19/09/2015 Accepted: 31/10/2015 Published: 11/11/2015

 

Abstract

We propose a model for gas sensors dynamic response which puts emphasis on conduction properties of n-type semiconductors. This model gives a physico-chemical description of gas detection mechanisms, by focusing on the extrinsic behavior of the sensor in the presence of reducing gas. Theoretical modeling of the sensor resistance in respect to experimental results was done to optimize sensor performances and also to better understand the gas detection mechanisms. This model especially applies in the case of exposure to low gas concentrations.

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