Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 81, Issue 2-3, Pages 182-186Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(01)00950-9
Keywords
semiconductor gas sensor; CO gas; low power consumption; oscillation; tin oxide
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In this paper, the fabrication method of a new type of carbon monoxide gas sensor based on SnOx with low power consumption and its sensing characteristics have been reported. The electric conductance of this type of sensor evolves oscillation form regularly when the sensor is exposed to low level of CO gas. The oscillation amplitude is directly proportional to the concentration of CO gas over a wide range. The effects of relevant factors. such as. humidity, temperature and interference gases on the sensor properties were examined. The sensing oscillation response mechanism was also discussed. (C) 2002 Published by Elsevier Science B.V.
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