Abstract
Detection of ammonia in an ammonia‐air mixture by means of SiO2 film matrices doped with an optically absorbing component sensitive to the determined gas and changing reversibly its optical characteristics with a change in the gas concentration in the range 0–500 ppm is demonstrated. It is shown that the structural characteristics of SiO2 matrices can be regulated by introducing modifying additives and varying the number of film layers to improve the service properties of ammonia‐sensitive sensor elements based on them.
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