Oxygen concentration cell type sensors

Oxygen concentration cell type gas sensors attached with oxide semiconductors, (a) Device structure, (b) responses to reducing or... 

Exploration to make FET type and oxygen concentration cell type gas sensors more flexible in operating temperature FET-based on silicon cannot function at temperatures higher than ca.l80°C, whereas the cell using zirconia cannot function at temperatures lower than ca. 550°C neither is able to work in the most important temperature range for gas sensing. Exploration for new semiconductors and new solid electrolytes is desired to eliminate these limitations. 

This type of oxygen concentration cell called the oxygen sensor is of considerable use in high temperature processing of metals and materials and in combustion processes. The oxygen sensor with proper design enables in situ measurements of... 

Another type of sensor is a high-temperature solid-state potentiometric sensor for oxygen (>400°C) in industrial processes. These are based on the measurement of the potential of a concentration cell of the type... 

Household appliances can also benefit from improvements in other areas. For example, oxygen sensors that measure the 02-concentations in exhaust gas have been developed that combine a Nernst type lambda gauge (which can measure only the ( -concentration at one lambda-point) with an amperometric 02-pumping cell. 

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