Influence of simultaneous addition of Sb2O3 and SnO2 on thermoelectric properties of Zn1−x−ySbxSnyO prepared by tape casting

We investigated the influence of the simultaneous addition of Sb2O3 and SnO2 on the thermoelectric properties of the Zn1−x−ySbxSnyO (0 ≤ x ≤ 0.01 and 0 ≤ y ≤ 0.01) prepared by tape casting. The addition of Sb2O3 and/or SnO2 to ZnO markedly enhanced both the electrical conductivity (σ) and the absolute value of the Seebeck coefficient (α). The power factor (σα2) of the Sb- and/or Sn-added Zn1−x−ySbxSnyO was much higher than that of pure ZnO. Simultaneous Sb- and Sn-added Zn0.985Sb0.005Sn0.01O showed the highest thermoelectric power factor (1.15 × 10−3 Wm−1 K−2) at 800 °C.