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SnO2 gas sensor effect of SO2 treatment on the electrical properties of SnO2

René Lalauze 1, 2 Jean-Claude Le Thiesse 2, 1 Christophe Pijolat 2, 1 Michel Soustelle 1, 3
1 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
2 MICC-ENSMSE - Département Microsystèmes, Instrumentation et Capteurs Chimiques
3 ProcESS-ENSMSE - Département Procédés et évolution des systèmes avec solides
Abstract : The influence of a SO2 treatment on the electrical properties of SnO2 has been studied. It is shown that some gaseous compounds induce an important maximum on the curve of the electrical conductance as a function of the temperature of SnO2 treated with SO2. The temperature at the maximum conductance is connected with the nature of the electrical contacts (gold or platinum) and an important part is associated with the metal-oxide interface process. The selective aspect of the electrical response can be exploited to develop a benzene detector.
keyword : tin oxide electrical properties SnO2 SO2 treatment benzene detector electrical conductance electrical contacts gold platinum
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https://hal-emse.ccsd.cnrs.fr/emse-00434065
Contributor : Andrée-Aimée Toucas <>
Submitted on : Friday, November 20, 2009 - 4:29:54 PM
Last modification on : Wednesday, June 24, 2020 - 4:18:18 PM

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MICC-ENSMSE | SPIN-ENSMSE | EMSE | INSTITUT-TELECOM

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René Lalauze, Jean-Claude Le Thiesse, Christophe Pijolat, Michel Soustelle. SnO2 gas sensor effect of SO2 treatment on the electrical properties of SnO2. Solid State Ionics, Elsevier, 1984, 12, pp.52-56. ⟨10.1016/0167-2738(84)90177-2⟩. ⟨emse-00434065⟩

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