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Influence of catalytic reactivity on the response of metal-oxide-silicon carbide sensor to exhaust gases
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, The Institute of Technology.
AB Volvo Technological Development, Göteborg, Sweden.
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1999 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, E-ISSN 1873-3077, Vol. 57, no 1-3, 159-165 p.Article in journal (Refereed) Published
Abstract [en]

Catalytic metal insulator silicon carbide, MISiC, Schottky diodes are promising devices for on board exhaust diagnosis in cars. These sensors show a direct or indirect sensitivity to gases like H-2, CO, HC (hydrocarbons) and O-2. The catalytic reactivity of the sensor will effect the gas sensing conditions. In some situations knowledge about the reactivity of the catalytic surface may give more information about the exhaust gas composition. For instance, the sensor signal normally moves to a lower voltage in an ambient containing H-2 and HC, however, under certain conditions when exposed to rich gas mixtures, the HC response is opposite the one for H-2. Measurements performed by the MISiC sensors on simulated exhaust gas mixtures, either rich or lean, are shown here. Some fundamental studies of the HC response have been performed. Reaction limitation conditions are suggested as an explanation for the response of HC opposite the one of H-2.

Place, publisher, year, edition, pages
Elsevier , 1999. Vol. 57, no 1-3, 159-165 p.
Keyword [en]
HC; silicon carbide; exhaust; Schottky diode; field effect device
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-88115DOI: 10.1016/S0925-4005(99)00140-9ISI: 000083570600024OAI: oai:DiVA.org:liu-88115DiVA: diva2:601814
Available from: 2013-01-30 Created: 2013-01-30 Last updated: 2017-12-06Bibliographically approved

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Lundström, IngemarEkedahl, Lars-GunnarLloyd Spetz, Anita

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Lundström, IngemarEkedahl, Lars-GunnarLloyd Spetz, Anita
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Applied PhysicsThe Institute of TechnologyBiosensors and BioelectronicsDepartment of Physics, Chemistry and Biology
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Sensors and actuators. B, Chemical
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