Thin film tin oxide-based propane gas sensors

In this work, we report on the elaboration of SnO 2 and SnO 2:Ag thin films (∼200 nm in thickness) obtained by heat-treatment in oxygen of Sn and Sn:Ag thin films deposited by vacuum evaporation on alumina substrates. A simple and very cheap procedure was used to dope the SnO 2 films with Ag. Prelim...

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Veröffentlicht in:	Thin solid films 2000-09, Vol.373 (1), p.141-144
Hauptverfasser:	Carbajal-Franco, G, Tiburcio-Silver, A, Dominguez, J M, Sanchez-Juarez, A
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Chemistry Exact sciences and technology General equipment and techniques General, instrumentation Instruments, apparatus, components and techniques common to several branches of physics and astronomy Physics Propane gas sensors Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing Silver doping Tin oxide thin films
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Zusammenfassung:	In this work, we report on the elaboration of SnO 2 and SnO 2:Ag thin films (∼200 nm in thickness) obtained by heat-treatment in oxygen of Sn and Sn:Ag thin films deposited by vacuum evaporation on alumina substrates. A simple and very cheap procedure was used to dope the SnO 2 films with Ag. Preliminary results on the sensing properties of these films are presented. Films are able to detect selectively the presence of C 3H 8 in the LP-gas domestic mixture. Doping with Ag allows reductions in the optimal operation temperature of the SnO 2 sensors by 100°C. This a very important result when detecting such a highly explosive gas.
ISSN:	0040-6090 1879-2731
DOI:	10.1016/S0040-6090(00)01122-6