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The interaction of different oxidizing agents on doped tin oxide

✍ Scribed by I. Sayago; J. Gutie´rrez; L. Are´s; J.I. Robla; M.C. Horrillo; J. Getino; J.A. Agapito

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
307 KB
Volume
25
Category
Article
ISSN
0925-4005

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✦ Synopsis

The interaction of NO*, NO= and O2 on an SnO, thin-film surface is studied. Experiments have been carried out for different tin-oxide films, undoped and doped with Pt, In and Al, prepared by reactive sputtering (r.f.) on alumina substrates. These films should allow the development of detectors for nitrogen oxides at concentrations of about a few ppm. Conductance measurements have been done in a constant flow of inert atmosphere (NJ and in synthetic air containing oxidizing agents (NO? and NO,) to study directly adsorbed NOz and NO and their reaction with chemisorbed oxygen. The results are discussed in terms of surface reactions.

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