Title of article
Influence of humidity on CO sensing with p-type CuO thick film gas sensors
Author/Authors
Hübner، نويسنده , , M. and Simion، نويسنده , , C.E. and Tomescu-St?noiu، نويسنده , , A. and Pokhrel، نويسنده , , S. and Bârsan، نويسنده , , N. and Weimar، نويسنده , , U.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
7
From page
347
To page
353
Abstract
A model for the detection of CO in the presence of humidity is proposed for thick porous film gas sensors based on p-type CuO. The sensing mechanism is investigated by means of simultaneous DC electrical resistance and work function changes measurements combined with appropriate modeling of the conduction in the polycrystalline sensing film. The experiments were performed at 150 °C in dry and humid air backgrounds. The conclusion is that, very similarly to the case of undoped SnO2, the explanation of the cross-interference of water in the CO detection is the fact that both react with pre-adsorbed oxygen ions.
Keywords
Water cross-interference , CuO , p-Type MOX , CO , MODELING
Journal title
Sensors and Actuators B: Chemical
Serial Year
2011
Journal title
Sensors and Actuators B: Chemical
Record number
1439745
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