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Effect Of Surface Modification On Structural, Optical And Ammonia Sensing Properties Of Indium Oxide Films

Author

Listed:
  • AMANDEEP KAUR BAL

    (Material Science Laboratory, Department of Physics, Guru Nanak Dev University, Amritsar 143005, India)

  • R. K. BEDI

    (Material Science Laboratory, Department of Physics, Guru Nanak Dev University, Amritsar 143005, India)

Abstract

Indium oxide(In2O3)films have been prepared by thermal oxidation of pre-deposited indium films onto glass substrate kept at room temperature (35°C). These films were dipped into an aqueous solution (0.1 M) of lithium chloride(LiCl)and aluminum chloride(AlCl3)followed by being fired at 500°C. Based on X-ray diffraction results, it has been observed that pure andLimodifiedIn2O3films are polycrystalline in nature whileAlmodifiedIn2O3film has a prominent peak corresponding to 222 plane ofIn2O3. Field emission scanning electron microscopy of pure film shows smaller grains which get transformed to bigger ones forLimodifiedIn2O3film. In case ofAlmodifiedIn2O3film agglomerated small grains are observed. This film also reveals the response of 60% for 100 ppm of ammonia vapors at room temperature. The transparency increased from 23–36% to 53–67% in visible region withLimodification of pureIn2O3film.

Suggested Citation

  • Amandeep Kaur Bal & R. K. Bedi, 2011. "Effect Of Surface Modification On Structural, Optical And Ammonia Sensing Properties Of Indium Oxide Films," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 18(05), pages 197-202.
    • Handle: RePEc:wsi:srlxxx:v:18:y:2011:i:05:n:s0218625x11014710
    DOI: 10.1142/S0218625X11014710
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