Abstract
It is known that barium carbonate can act as CO2 sensitive material in work function type gas sensors in ambient condition. The reaction is due to the formation of bicarbonate species at the surface. The cross-sensitivity to other acidic gases as NO2 was up to now regarded and described in terms of similar reactions on the carbonate surface. In this work it was found that the NO2 sensitivity is due to reactions on the back metalisation of the carbonate film. Using different layer systems different sensitivities can therefore be switched on and off according to the needs in special applications. The design of specialised sensor systems is possible on the base of the results found in this work.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
