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NH3 sensing characteristics of pure and Al modified WO3 thin films

  • C. P. Goyal
  • , N. S. Ramgir
  • , P. K. Sharma
  • , N. Datta
  • , M. Kaur
  • , V. Parey
  • , A. K. Debnath
  • , F. Z. Haque
  • , D. K. Aswal
  • , S. K. Gupta

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

Abstract

Ammonia sensing properties of pure and Al modified WO3 thin films prepared using RF sputtering have been investigated. Both the sensor films exhibited a maximum response at an operating temperature of 250°C. Modification with Al has been demonstrated to improve the response kinetics in particular the response time (6 min) in comparison to that of pure WO 3 (8 min) towards NH3 (100 ppm). Interestingly, both the sensor films showed an increase in resistance i.e., a p-type behavior upon exposure to NH3.

Original languageEnglish
Title of host publicationProceedings of the International Conference on "Advanced Nanomaterials and Emerging Engineering Technologies", ICANMEET 2013
PublisherIEEE Xplore
Pages560-562
Number of pages3
ISBN (Print)9781479913794
DOIs
Publication statusPublished (in print/issue) - 30 Oct 2013
Event2013 International Conference on Advanced Nanomaterials and Emerging Engineering Technologies, ICANMEET 2013 - Chennai, India
Duration: 24 Jul 201326 Jul 2013

Conference

Conference2013 International Conference on Advanced Nanomaterials and Emerging Engineering Technologies, ICANMEET 2013
Country/TerritoryIndia
CityChennai
Period24/07/1326/07/13

Keywords

  • Al
  • NH
  • RF sputtering
  • Sensor
  • Thin Film
  • WO

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