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Development of a room temperature thin film In2O3, ZnO and SnO2 ozone sensor

  • University of Limerick

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Thin films of Indium-zinc-tin oxide have been prepared by Vacuum Thermal Evaporation (VTE). The sensing characteristics of these films to environmentally relevant ozone concentrations were studied at room temperature. The effects of film thickness, deposition rate and annealing were investigated. The resistance of the thin film was found to be inversely proportional to the deposition rate. The highest sensitivity of the ozone sensors was found at a deposition rate of 1.2 nm/s - 1.4 nm/s. In addition the 03 sensors were found to perform best with a 40 nm thick sensing layer. In2O3, ZnO and SnO 2 were deposited on alumina substrates containing interdigitated electrodes by means of VTE. These results have shown that ln203:ZnO:SnO2 thin films prepared by VTE method are promising for room temperature ozone sensing.

Original languageEnglish
Title of host publication2007 IEEE International Symposium on Industrial Electronics, ISIE 2007, Proceedings
Pages1536-1541
Number of pages6
DOIs
Publication statusPublished - 2007
Event2007 IEEE International Symposium on Industrial Electronics, ISIE 2007 - Caixanova - Vigo, Spain
Duration: 4 Jun 20077 Jun 2007

Publication series

NameIEEE International Symposium on Industrial Electronics

Conference

Conference2007 IEEE International Symposium on Industrial Electronics, ISIE 2007
Country/TerritorySpain
CityCaixanova - Vigo
Period4/06/077/06/07

Keywords

  • Indium oxide
  • Ozone sensor
  • Thin film

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