Hydrogen sulphide detection by CMOS integrated tungsten oxide nanowire networks

Johanna Krainer, Marco Deluca, Eva Lackner, Robert Wimmer-Teubenbacher, Florentyna Sosada, Christian Gspan, Karl Rohracher, Ewald Wachmann, Anton Köck

Research output: Contribution to journalConference articleResearch

Abstract

Metal oxide nanostructures like tungsten oxide nanowires are intensively studied materials for sensor applications. In this work we report on tungsten oxide gas sensors integrated on a CMOS fabricated microhotplate chip. Tungsten oxide gas sensors were prepared by drop coating of a nanowire network suspension onto interdigitated electrodes prefabricated on the CMOS microhotplate chip. The tungsten oxide nanowire network was characterised by TEM and Raman spectroscopy, confirming their non-stoichiometric state. Using tungsten oxide nanowire networks as gas sensing material we observed high sensitivity to hydrogen sulphide: concentrations of 1 ppm have been detected with a sensor response up to 55%.
Original languageEnglish
Pages (from-to)7132-7136
JournalMaterials Today / Proceedings
Volume4
Publication statusPublished - 2017

Fingerprint

Hydrogen Sulfide
Hydrogen sulfide
Nanowires
Tungsten
Oxides
Chemical sensors
Sensors
Raman spectroscopy
Nanostructures
Suspensions
Gases
Metals
tungsten oxide
Transmission electron microscopy
Coatings
Electrodes

ASJC Scopus subject areas

  • Materials Science(all)

Fields of Expertise

  • Advanced Materials Science

Treatment code (Nähere Zuordnung)

  • Application

Cite this

Krainer, J., Deluca, M., Lackner, E., Wimmer-Teubenbacher, R., Sosada, F., Gspan, C., ... Köck, A. (2017). Hydrogen sulphide detection by CMOS integrated tungsten oxide nanowire networks. Materials Today / Proceedings , 4, 7132-7136.

Hydrogen sulphide detection by CMOS integrated tungsten oxide nanowire networks. / Krainer, Johanna; Deluca, Marco; Lackner, Eva; Wimmer-Teubenbacher, Robert; Sosada, Florentyna; Gspan, Christian; Rohracher, Karl; Wachmann, Ewald; Köck, Anton.

In: Materials Today / Proceedings , Vol. 4, 2017, p. 7132-7136.

Research output: Contribution to journalConference articleResearch

Krainer, J, Deluca, M, Lackner, E, Wimmer-Teubenbacher, R, Sosada, F, Gspan, C, Rohracher, K, Wachmann, E & Köck, A 2017, 'Hydrogen sulphide detection by CMOS integrated tungsten oxide nanowire networks' Materials Today / Proceedings , vol. 4, pp. 7132-7136.
Krainer J, Deluca M, Lackner E, Wimmer-Teubenbacher R, Sosada F, Gspan C et al. Hydrogen sulphide detection by CMOS integrated tungsten oxide nanowire networks. Materials Today / Proceedings . 2017;4:7132-7136.
Krainer, Johanna ; Deluca, Marco ; Lackner, Eva ; Wimmer-Teubenbacher, Robert ; Sosada, Florentyna ; Gspan, Christian ; Rohracher, Karl ; Wachmann, Ewald ; Köck, Anton. / Hydrogen sulphide detection by CMOS integrated tungsten oxide nanowire networks. In: Materials Today / Proceedings . 2017 ; Vol. 4. pp. 7132-7136.
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AU - Gspan, Christian

AU - Rohracher, Karl

AU - Wachmann, Ewald

AU - Köck, Anton

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AB - Metal oxide nanostructures like tungsten oxide nanowires are intensively studied materials for sensor applications. In this work we report on tungsten oxide gas sensors integrated on a CMOS fabricated microhotplate chip. Tungsten oxide gas sensors were prepared by drop coating of a nanowire network suspension onto interdigitated electrodes prefabricated on the CMOS microhotplate chip. The tungsten oxide nanowire network was characterised by TEM and Raman spectroscopy, confirming their non-stoichiometric state. Using tungsten oxide nanowire networks as gas sensing material we observed high sensitivity to hydrogen sulphide: concentrations of 1 ppm have been detected with a sensor response up to 55%.

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