D7.3 - Solid-State Potentiometric CO2-Sensor in Thick-Film Technology

S. Wiegärtner, G. Hagen, D. Biskupski, J. Kita, R. Moos, M. Seufert, J. Norman, N. Jörns, A. Bolz, C. Schmaus & A. Kießig
Monitoring the CO2 concentration is useful in many applications, for example to examine the quality of ambient air, for automotive applications, or for breath analysis. Solid-state potentiometric gas sensors are inexpensive and provide many advantages like fast sensor response, high selectivity, or long term-stability. A solid-state potentiometric CO2-Sensor with internal heater is fully manufactured in planar thickfilm technology. Nasicon is used as sodium conducting phase. An eutectic mixture of Li2CO3 and BaCO3 (molar ratio 1:2)...