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Detecting Volatile Organic Compounds in the ppb range with platinum-gate SiC-Field Effect Transistors
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.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tillämpad sensorvetenskap. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0002-2817-3574
Saarland University, Saarbruecken, Germany. (Dept. of Mechatronics Lab for Measurement Technology)
Vise andre og tillknytning
2013 (engelsk)Inngår i: SENSORS, 2013 IEEE, IEEE , 2013, s. 1-4Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In this work, the use of a platinum gate gas-sensitive SiC Field Effect Transistor (SiC-FET) was studied for the detection of low concentrations of hazardous Volatile Organic Compounds (VOC). For this purpose, a new gas mixing system was built providing VOCs down to sub-ppb levels by permeation ovens and gas pre-dilution. Measurements have shown that benzene, naphthalene and formaldehyde can be detected in the ppb range and indicate a detection limit of 1-2 ppb for benzene and naphthalene. The sensitivity is high with a response of 5.5 mV for 10 ppb naphthalene in a humid atmosphere (at 20% relative humidity) and with additional 2 ppm ethanol the response to naphthalene was still 1.3 mV. Formaldehyde can be detected down to approximately 100 ppb under humid conditions. This is the first time that a metal gated SiC-FET was used to detect hazardous VOCs in the low ppb range making SiC-FETs suitable candidates for indoor air quality applications.

sted, utgiver, år, opplag, sider
IEEE , 2013. s. 1-4
Serie
IEEE Sensors. Proceedings, ISSN 1930-0395
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-107940DOI: 10.1109/ICSENS.2013.6688279ISBN: 978-146734640-5 (tryckt)OAI: oai:DiVA.org:liu-107940DiVA, id: diva2:728215
Konferanse
IEEE Sensors 2013, 3-6 November 2013, Baltimore, MD, USA
Tilgjengelig fra: 2014-06-23 Laget: 2014-06-23 Sist oppdatert: 2014-11-28bibliografisk kontrollert

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