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Ozone detection in the ppb range with work function sensors operating at room temperature

Authors
Journal
Sensors and Actuators B Chemical
0925-4005
Publisher
Elsevier
Publication Date
Volume
34
Identifiers
DOI: 10.1016/s0925-4005(96)01941-7
Keywords
  • Gas Sensors: Work Function

Abstract

Abstract Thin evaporated films of potassium iodide (KI) are highly sensitive to ozone in work function measurements. Among various other materials KI is well suited for limit detection in the ppb range in normal humid air with work function sensors like SGFET. The cross-sensitivities to other oxidants are comparatively small which is due to a redox system of highly oxidated states on the layer surface as is found by XPS analysis.

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