• DocumentCode
    2884746
  • Title

    Selective detection of NH3 by Ag6Mo10O33 thick film by AC impedance spectroscopy

  • Author

    Prabhu, E. ; Mariappan, C.R. ; Hareesh, G. ; Gnanasekar, K.I. ; Jayaraman, V. ; Gnanasekaran, T.

  • Author_Institution
    Liquid Metals and Structural Chemistry Division, Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, INDIA
  • fYear
    2012
  • fDate
    7-10 March 2012
  • Firstpage
    193
  • Lastpage
    196
  • Abstract
    An ammonia sensor based on Ag6Mo10O33 thick film was fabricated and tested. The morphology of the film was characterized by SEM. The electrical capacitance and impedance of the compound were investigated by exposing the film in air, air containing 500 vppm of H2, petroleum gas (PG) and NH3 independently at 350°C using AC impedance spectroscopy. When the film was exposed to air containing ammonia significant increase in capacitance was observed at lower frequencies. The mechanism for the changes in capacitance and impedance as a function of frequency is presented.
  • Keywords
    Capacitance; Impedance spectroscopy; Selectivity; Semi-conducting metal oxide; Thick film; ammonia sensing;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Physics and Technology of Sensors (ISPTS), 2012 1st International Symposium on
  • Conference_Location
    Pune, India
  • Print_ISBN
    978-1-4673-1040-6
  • Type

    conf

  • DOI
    10.1109/ISPTS.2012.6260920
  • Filename
    6260920
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2884746