Modelling of Dynamic Response of WO3 Gas Sensors under COMehdi Othman1,2, Khalifa Aguir1*, Najeh Mliki2 and Philippe Menini3
- 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
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.