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Simultaneous Doping of Zn And Sb in Sno2 Ceramics: Enhancement of Electrical Conductivity

Journal Title, Volume, Page: 
Solid State Sciences Volume 8, Issue 1, January 2006, Pages 7-13
Year of Publication: 
2006
Authors: 
I. Saadeddin
Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France
Current Affiliation: 
Department of Physics, Faculty of Science, An-Najah National University, Palestine
H.S. Hilal
Current Affiliation: 
Department of Chemistry, An-Najah National University, PO Box 7, Nablus, Palestine
B. Pecquenard
Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France
J. Marcus
Laboratoire d'Etudes des Propriétés Electroniques des Solides (CNRS-UPR11), 25, Avenue des Martyrs, 38000 Grenoble, France
A. Mansouri
Institut Européen des Membranes (IEM), Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier, France
C. Labrugere
Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France
M.A. Subramanian
DuPont Central Research & Development, Experimental Station, Wilmington, DE 19880-0328, USA
G. Campet
Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France
Preferred Abstract (Original): 

SnO2-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 SnO2 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 SnO2 ceramics co-doped with Sb and Zn (SnO2:Sb:Zn) to combine the advantages of both dopants. X-ray photoelectron spectroscopy (XPS) analysis confirmed that Sb5+ is mainly substituted at the Sn4+ 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 Sb5+ 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.

 Enhancement of electrical conductivity

Hikmat S. Hilal's picture

Simultaneous Doping of Zn And Sb in Sno2 Ceramics: Enhancement of Electrical Conductivity

Journal Title, Volume, Page: 
Solid State Sciences Volume 8, Issue 1, January 2006, Pages 7-13
Year of Publication: 
2006
Authors: 
H.S. Hilal
Department of Chemistry, An-Najah National University, PO Box 7, Nablus, Palestine
Current Affiliation: 
Department of Chemistry, An-Najah National University, PO Box 7, Nablus, Palestine
I. Saadeddin
Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France
B. Pecquenard
Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France
J. Marcus
Laboratoire d'Etudes des Propriétés Electroniques des Solides (CNRS-UPR11), 25, Avenue des Martyrs, 38000 Grenoble, France
A. Mansouri
Institut Européen des Membranes (IEM), Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier, France
C. Labrugere
Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France
M.A. Subramanian
DuPont Central Research & Development, Experimental Station, Wilmington, DE 19880-0328, USA
G. Campet
Institut de Chimie de la Matière Condensée de Bordeaux (CNRS-UPR9048), Université Bordeaux I, 87, Avenue de Dr. Albert Schweitzer, 33608 Pessac, France
Preferred Abstract (Original): 

SnO2-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 SnO2 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 SnO2 ceramics co-doped with Sb and Zn (SnO2:Sb:Zn) to combine the advantages of both dopants. X-ray photoelectron spectroscopy (XPS) analysis confirmed that Sb5+ is mainly substituted at the Sn4+ 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 Sb5+ 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.

 Enhancement of electrical conductivity

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