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  • Wednesday, September 14, 2005
  • Simultaneous doping of Zn and Sb in SnO2 ceramics: Enhancement of electrical conductivity
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    Solid State Sciences 8 (2006) 7–13.

    I. Saadeddin

    , H.S. Hilal b, B. Pecquenard a, J. Marcus c, A. Mansouri d, C. Labrugerea ,M.A. Subramanian e, G. Campet a,



    Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France



    Department of Chemistry, An-Najah National University, PO Box 7, Nablus, Palestine


    Laboratoire d’Etudes des Propriétés Electroniques des Solides (CNRS-UPR11), 25, Avenue des Martyrs, 38000 Grenoble, France


    Institut Européen des Membranes (IEM), Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier, France


    DuPont Central Research & Development, Experimental Station, Wilmington, DE 19880-0328, USA




    2-based ceramics doped with Sb and/or Zn, have been prepared by solid state reaction at 1300 C. The effect of dopants on electronic

    properties and sintering behavior has been studied. While undoped SnO

    2 pellets displayed very low electrical conductivities and lower densities,

    the Sb-doped ceramics showed higher electrical conductivity, with almost no densification and a significant antimony loss. On the contrary, a high

    densification and low conductivity are obtained for Zn-doped ceramics. Therefore, it is worthwhile to investigate SnO

    2 ceramics co-doped with Sb

    and Zn (SnO

    2:Sb:Zn) to combine the advantages of both dopants. X-ray photoelectron spectroscopy (XPS) analysis confirmed that Sb5+ is mainly

    substituted at the Sn

    4+ site for Sb-doped ceramics and is in agreement with Hall-measurements. In the case of SnO2 samples co-doped with Sb

    and Zn, XPS and Hall data confirmed the presence of both Sb

    5+ and Sb3+. The SnO2:Sb:Zn system exhibited enhanced electrical conductivity

    and high densities. In addition, the presence of Zn prevented the Sb evaporation during sintering.

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Hikmat S. Hilal
Organometallics (organic and inorganic), Materials, Catalysis, Semiconductors, Photoelectro-chemistry
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