Abstract
Strong electrical fields acting on the sensitive layer surfaces of a semiconductor gas sensor can alter its adsorption characteristics for gases and thus its sensing behaviour. Models for the effect are described based on the works of Morrison and of Wolkenstein1 and simulations for clarifying important parameters are provided. Design aspects of conductivity sensors for proper use of the effect are discussed, also in a comparison to Potentiometric FET sensors. Some exemplary experimental results obtained with the latter sensors are shown and possible new operation modes of gas sensing using the electroadsorptive effect are introduced.
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Bögner, M., Doll, T. (2003). Introduction to the Electroadsorptive Effect and its Applications. In: Doll, T. (eds) Advanced Gas Sensing. Springer, Boston, MA. https://doi.org/10.1007/978-1-4419-8612-2_1
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DOI: https://doi.org/10.1007/978-1-4419-8612-2_1
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