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A NOx sensor for high-temperature applications based on SiC
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics .
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

A new NOx sensor for high-temperature applications has been developed and thouroghly characterised. The sensor layers are a mixed oxide of CoO, MgO and MgO2 deposited by thermal evaporation with a porous platinum gate on top, deposited by thermal evaporation or sputtering. The sensitivity and selectivity of the sensor is promising and is shown to depend upon the ratio between Co and Mg in the film and a number of competing mechanisms are shown to take place on the sensor surface. Response and recovery of the device is still slow and there are some drift, which are suggested to be due to a restructuring sensor surface during operation that was found by SEM-studies. Finally,the oxide surface has been characterized by XPS and a novel process for deposition of the sensor layers by lift-off technique has been developed.

Place, publisher, year, edition, pages
2010. , 59 p.
Keyword [en]
chemical Sensor, NOx, CoO, MgO
Keyword [sv]
Kemisk sensor, NOx, CoO, MgO
National Category
Other Engineering and Technologies not elsewhere specified Other Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-59559ISRN: LITH-IFM-A-EX–10/2286–SEOAI: oai:DiVA.org:liu-59559DiVA: diva2:352408
Uppsok
Physics, Chemistry, Mathematics
Supervisors
Examiners
Available from: 2010-09-21 Created: 2010-09-20 Last updated: 2011-03-18Bibliographically approved

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Other Engineering and Technologies not elsewhere specifiedOther Materials Engineering

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf