Simultaneous Doping of Zn and Sb in SnO₂ Ceramics: Enhancement of Electrical Conductivity.

Abstract

Conductivity. -Doping of SnO2 ceramics with Sb enhances the ceramic electrical conductivity, but does not improve the densification. Zn-doped ceramics show enhanced ceramic densification but low conductivity. Ceramics doped with both Sb and Zn exhibit enhanced electrical conductivity and high density as well. XPS and Hall data indicate the presence of both Sb 5+ and Sb 3+ in the codoped SnO 2 samples. -(SAADEDDIN*, I.; HILAL, H. S.; PECQUENARD, B.; MARCUS, J.; MANSOURI, A.; LABRUGERE, C.; SUBRAMANIAN, M. A.; CAMPET, G.; Solid State Sci. 8 (2006) 1, 7-13; Inst. Chim. Matiere Condens.

Thermoelectric Properties of SnO2 Ceramics Doped with Sb and Zn

“…The behavior of the electrical conductivity of the samples with different doping levels and morphology can be explained by considering the following competing factors: (1) Zn doping leads to an increase in the density and the grain size, which increases the time between electron scattering events of charge carriers, and thus increases electrical conductivity. (2) Zn doping of SnO 2 leads to an increase in carrier mobility, 17 which also increases the electrical conductivity. (3) Substitution of Zn 2+ for Sn 4+ increases the hole concentration of the system, leading to a decrease in the electron concentration and thus a decrease in the electrical conductivity.…”

“…9 Because of its advantageous transport properties, doped SnO 2 can be used for transparent electrodes, solid-state gas sensors, and varistors. Because densification of SnO 2 ceramics without sintering aids is very difficult, 10 17 As for thermoelectric properties, Morgan and Wright measured the Seebeck effect in SnO 2 single crystals. The Seebeck coefficients ranged from approximately 50 lV K À1 to 220 lV K À1 , depending on the temperature or concentration of conduction electrons in the samples.…”

Low Concentration NO Gas Detection Of SnO2 And Zn0.50Sn0.50O Sensors

“…Mixing of suitable dopant in crystal lattice modify the defect chemistry and microstructure of the system which further results in a change of its properties [9]. The addition of cationic dopants produces high densification and reduced particle size [10]. Researchers have shown that the doping increased the sensor response of MOS materials.…”

Fabrication of SnO2/Zn Core-shell Nanowires and Photoluminescence Properties

“…However, there have been numerous papers reporting the effect of Zn doping into SnO2 structures. The doping of Zn changes or enhances a variety of important materials properties, including gas sensing [24], room-temperature ferromagnetism [25], electrical conductivity [26], photocatalytic performance [27], change collection efficiency/mobility [28], and thermoelectric properties [29]. Accordingly, the Zn-shelled SnO2 nanowires prepared in the present work will attract enormous interests in both science and engineering community.…”