Thick-film gas sensors based on nano-sized semiconducting oxide powders

Giuliano Martinelli, M. Cristina Carotta, Enrico Traversa, Giovanna Ghiotti

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

Using the screen-printing technology, thick films were fabricated by using semiconducting oxide powders such as SnO2, TiO2, LaFeO3, SmFeO3, and In2O3. The microstructure and the gas-sensitive electrical response of the developed thick films were determined. Outdoor field tests were also performed. The use of nano-sized semiconducting oxide powders significantly improved the properties of the gas-sensing materials. Further, acceptable conductance-change performance, along with improved selectivity, was achieved by controlling the microstructure of the oxide through chemical control of the powders and the oxide composition.

Original languageEnglish (US)
Pages (from-to)30-35
Number of pages6
JournalMRS Bulletin
Volume24
Issue number6
StatePublished - Jun 1 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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