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Elsevier, Sensors and Actuators B: Chemical, 2(3), p. 162

DOI: 10.1016/0925-4005(91)80210-b

Elsevier, Sensors and Actuators B: Chemical, 1(3), p. 7-14

DOI: 10.1016/0925-4005(91)85002-z

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Selectivity studies on tin oxide-based semiconductor gas sensors

Journal article published in 1991 by G. S. V. Coles, G. Williams ORCID, B. Smith
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Two sensors previously developed at Swansea have been greatly improved. The resistance in clean air of the CO-selective sensor can be reduced by a factor of up to 200 by introducing small amounts of Sb2O3 (0.2–2%); production of the methane-selective device can be improved by introducing a presintering stage. Further study of the tin oxide-bismuth oxide system has led to the production of a third selective sensor, which is sensitive to the presence of hydrogen but shows no response to the presence of either carbon monoxide or methane.