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Application of CuBr Ion Conductor Thin-Films for Ammonia Gas Detection

Published online by Cambridge University Press:  01 February 2011

Pascal Lauque ,
Marc Bendahan ,
Jean Luc Seguin  and
Philippe Knauth
Pascal Lauque
Affiliation:
L2MP, Université Paul Cézanne-CNRS, Centre St Jérôme, Service 142, 13397 Marseille Cedex 20, France
Marc Bendahan
Affiliation:
L2MP, Université Paul Cézanne-CNRS, Centre St Jérôme, Service 142, 13397 Marseille Cedex 20, France
Jean Luc Seguin
Affiliation:
L2MP, Université Paul Cézanne-CNRS, Centre St Jérôme, Service 142, 13397 Marseille Cedex 20, France
Philippe Knauth
Affiliation:
L2MP, Université Paul Cézanne-CNRS, Centre St Jérôme, Service 142, 13397 Marseille Cedex 20, France
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Abstract

CuBr films are used to design an ammonia gas microsensor operating at ambient temperature, with high sensitivity and much improved selectivity in comparison with usual conductometric microsensors. The specific detection mechanism relies on adsorption of ammonia molecules and interactions with mobile Cu+ ions in the ionic conductor film. The CuBr films can be prepared by r.f. sputtering, but more simply and cost efficiently by chemical reaction of copper metal with bromine ions. Photolithographic techniques are applied to miniaturize the sensor.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K9.10
Copyright
Copyright © Materials Research Society 2005

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References

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