Carbon monoxide detection with CMOS integrated thin film SnO2 gas sensor

Eva Lackner, Johanna Krainer, Robert Wimmer-Teubenbacher, Florentyna Sosada, Marco Deluca, Christian Gspan, Karl Rohracher, Ewald Wachmann, Anton Köck

Research output: Contribution to journalConference article

Abstract

We present the integration of thin film SnO2 gas sensor on CMOS microchips. A spray pyrolysis process was used to deposit the gas sensitive film, with a thickness of 50 nm, on CMOS microhotplates. The exposure of the CMOS integrated gas sensor to carbon monoxide at different operating temperatures and humidity levels lead to a significant decrease in the sensor resistance. At an operating temperature of 375 °C a sensor response of almost 50% was achieved. The integration of the sensing material on CMOS microhotplates makes it possible to reduce the size and power consumption of metal oxide gas sensors
Original languageEnglish
Pages (from-to)7128-7131
JournalMaterials Today: Proceedings
Volume4
Issue number7,2
DOIs
Publication statusPublished - 2017

ASJC Scopus subject areas

  • Materials Science(all)

Fields of Expertise

  • Advanced Materials Science

Treatment code (Nähere Zuordnung)

  • Application

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