Control of resistance to enhance the sensitivity of nanocrysatlline tin oxide gas sensitive thick film

Sung Jei Hong, Dae Gyu Moon, Jeong In Han, Sang Gweon Chang, Moo Young Huh

Research output: Contribution to conferencePaperpeer-review

Abstract

In this work, sensitivity of a nanocrystalline tin oxide gas sensitive thick film was successfully enhanced by controlling its resistance. For the precise control of the resistance, low temperature catalyst doping (LTCD) method was applied below 300°C to dope Pt catalyst onto nanocrystalline tin oxide particle. Also, a gas sensitive thick film was fabricated using the nanocrystalline tin oxide particle having a size smaller than 10 nm, and it led to an enhanced sensitivity with respect to the methane gas. That is, a good and stable sensitivity (R3500/R1000) of 0.64 was achieved after aging for 5 hours at 400°C by doping with 5wt% of Pt catalyst onto the tin oxide particle.

Original languageEnglish
Pages689-692
Number of pages4
StatePublished - 2004
EventIEEE Sensors 2004 - Vienna, Austria
Duration: 24 Oct 200427 Oct 2004

Conference

ConferenceIEEE Sensors 2004
Country/TerritoryAustria
CityVienna
Period24/10/0427/10/04

Keywords

  • Gas sensitive thick film
  • Nanocrystalline
  • Tin oxide

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