Temperature cycled operation of SiC field effect gas sensors: increasing the selectivity for improved sensor systems
2011 (English)In: AIP. Conf. Proc ISOEN 2011 vol 1362, 2011, 91-92 p.Conference paper (Refereed)
In order to detect and quantify nitrogen oxides (NOx) in a mixture of typical exhaust gases a diode coupled FET has been investigated using Temperature Cycled Operation. This approach, originally developed for metal oxide gas sensors, is quite new for GasFETs but preliminary studies proved that it is suitable for GasFETs as well. In this paper the basic concept was improved by a temperature cycle tailored to NOx detection. Multivariate statistics have been used to evaluate the sensor data. Measurements have shown that with a piecewise extraction of features, a quantification of NO with additional NO2 is possible in the background of exhaust gases. Thus, the detection of NOx and especially the determination of the concentration can be improved.
Place, publisher, year, edition, pages
2011. 91-92 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-73852DOI: doi:10.1063/1.3626317OAI: oai:DiVA.org:liu-73852DiVA: diva2:477946
ISOEN - International Symposium on Olfaction and Electronic Nose 2011, New York, USA, 02-05 May