Oxygen influence on the interaction mechanisms of ozone on SnO2 sensors

This paper deals with the influence of the test procedure on the electrical responses of tin dioxide sensors to ozone under atmospheric conditions. For an operating temperature of 350 °C, the gas sensor responses underline two effects: the exposure time to ozone and the balance between the exposure time to ozone and the exposure time to the purified air. Based on experimental results, the interpretation of the interaction processes between ozone and the sensitive layer is discussed.