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Identification of ammonia and carbon monoxide based on the hysteresis of a gas sensitive silicon carbide field effect transistor
Saarland University, Saarbruecken, Germany. (Dept. of Mechatronics Lab for Measurement Technology)
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tillämpad sensorvetenskap. Linköpings universitet, Tekniska högskolan. Saarland University, Saarbruecken, Germany. (Dept. of Mechatronics Lab for Measurement Technology)
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tillämpad sensorvetenskap. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0002-2817-3574
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tillämpad sensorvetenskap. Linköpings universitet, Tekniska fakulteten. (Applied Sensor Science)
Vise andre og tillknytning
2013 (engelsk)Inngår i: Transducers 2013 & Eurosensors XXVII, IEEE , 2013, s. 250-253Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In this work gate bias cycled operation (GBCO) is used on a gas-sensitive SiC field effect transistor(“GasFET”) to increase the sensitivity and selectivity. Gate bias ramps introduce strong hysteresis in the sensor signal. The shape of this hysteresis is shown to be an appropriate feature both for the discrimination of various gases (NH3, CO, NO, CH4) and also different gas concentrations (250 and 500 ppm). The shape is very sensitive to ambient conditions. Thus, the influence of oxygen concentration and relative humidity as well as sensor temperature is investigated and reasons for the observed signal changes are discussed.

sted, utgiver, år, opplag, sider
IEEE , 2013. s. 250-253
Emneord [en]
gas sensor, field effect transistor, GasFET, hysteresis, ammonia, carbon monoxide, sensitivity, selectivity
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-102961DOI: 10.1109/Transducers.2013.6626749ISBN: 978-1-4673-5983-2 (tryckt)OAI: oai:DiVA.org:liu-102961DiVA, id: diva2:685148
Konferanse
17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 16-20 June 2013, Barcelona, Spain
Tilgjengelig fra: 2014-01-08 Laget: 2014-01-08 Sist oppdatert: 2015-05-28bibliografisk kontrollert

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