Thick-Film gas Sensors Based on Nano-Sized Semiconducting Oxide Powders

摘要

It has been demonstrated that the prop- erties of gas-sensing materials can be improved by the use of nano-sized semi- conducting oxide powders. It has been shown that acceptable conductance- change performance, along with improved selectivity, can be achieved by control- ling the microstructure of the oxide through chemical control of the powders and the oxide composition. Additives can be used to control both the conduc- tance in air and the microstructure itself.