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Characterizing the Influence of Gate Bias on Electrical and Catalytical Properties of a Porous Platinum Gate on Field Effect Gas Sensors
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, Faculty of Science & Engineering. University of Saarland, Germany.
Linköping University, Department of Physics, Chemistry and Biology, Applied Sensor Science. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Applied Sensor Science. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2817-3574
University of Saarland, Germany.
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2016 (English)In: 2016 IEEE SENSORS, IEEE , 2016Conference paper, Published paper (Refereed)
Abstract [en]

In this work, we exposed an MIS capacitor with porous platinum as gate material to different concentrations of CO and NH3. Its capacitance and typical reaction products (water, CO2 and NO) were monitored at high and low oxygen concentration and different gate bias voltages. We found that the gate bias influences the switch-point of the binary CO response usually seen when either changing the temperature at constant gas concentrations or the CO/O-2 ratio at constant temperature. For NH3, the sensor response as well as product reaction rates increase with bias voltages up to 6 V. A capacitance overshoot is observed when switching on or off either gas at low gate bias, suggesting increasing oxygen surface coverage with decreasing gate bias.

Place, publisher, year, edition, pages
IEEE , 2016.
Series
IEEE Sensors, ISSN 1930-0395
Keyword [en]
silicon carbide; MISFET; binary response; carbon monoxide; ammonia
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-137416DOI: 10.1109/ICSENS.2016.7808458ISI: 000399395700053ISBN: 978-1-4799-8287-5 (print)OAI: oai:DiVA.org:liu-137416DiVA: diva2:1096650
Conference
15th IEEE Sensors Conference
Available from: 2017-05-18 Created: 2017-05-18 Last updated: 2017-05-18

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Bastuck, ManuelPuglisi, DonatellaLloyd Spetz, AnitaAndersson, Mike
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • modern-language-association-8th-edition
  • vancouver
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Language
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  • sv-SE
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