A thin-film tin-oxide carbon monoxide sensor for exhaust gas analysis

A thin-film tin-oxide carbon monoxide sensor for exhaust gas analysis

A sputtered thin-film tin oxide:platinum sensor operating at 125 °C was successfully used to detect carbon monoxide gas from a car exhaust. Detection in the range 0.2 to 8% was demonstrated. Although ohmic contacts to the sensor were achieved, preliminary life tests showed that corrosion occurs in h...

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Veröffentlicht in:Journal of materials science. Materials in electronics 2000-06, Vol.11 (4), p.369-372
Hauptverfasser: Williams, E W, Tomlinson, N, Cheney, M T, Keeling, A G
Format: Artikel
Sprache:eng
Schlagworte:
Carbon monoxide
Contact
Contact resistance
Electronics
Exhaust
Gas analysis
Porosity
Sensors
Thin films
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Zusammenfassung:A sputtered thin-film tin oxide:platinum sensor operating at 125 °C was successfully used to detect carbon monoxide gas from a car exhaust. Detection in the range 0.2 to 8% was demonstrated. Although ohmic contacts to the sensor were achieved, preliminary life tests showed that corrosion occurs in humid atmospheres. An alternative contact material is suggested. Further work on the change in response with thickness is required and this should include porosity studies.[PUBLICATION ABSTRACT]
ISSN:0957-4522
1573-482X
DOI:10.1023/A:1008993702828