Array of thick film sensors for atmospheric pollutant monitoring

Maria Christina Carotta, Giuliano Martinelli, Luigi Crema, Massimiliano Gallana, Marco Merli, Giovanna Ghiotti, Enrico Traversa

Research output: Contribution to journalConference articlepeer-review

58 Scopus citations

Abstract

Chemical routes such as sol-gel techniques and thermal decomposition of heteronuclear complexes have been used to prepare nanosized powders of n-type (SnO2, TiO2 and In2O3) and p-type (LaFeO3) semiconducting oxides. Thick film gas sensors have been fabricated using these powders, printed on laser pre-cut 96% alumina substrates, each 2 × 2 mm element being provided with a heater, Au interdigitated contacts and a Pt-100 resistor for controlling the operating temperature. The films have been fired at different temperatures suitable to keep the grain size at the nanometer level. Electrical responses to some major polluting gases (CO, NO, NO2 and O3) obtained in the field have been compared with international standard analytical techniques.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume68
Issue number1
DOIs
StatePublished - Aug 25 2000
EventProceedings of Eurosensors XIII - The Hague, Neth
Duration: Sep 12 1999Sep 15 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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