Conductivity and Gas Sensitivity of ZnO-Sb_2O_3 Sintered System

ZnO tetrapod nanowhiskers and Sb2O3 quasi-spherical nanoparticles were prepared by metallic vapour-phase oxidation, and the conductivity and gas sensitivity of thick films based on ZnO-Sb2O3 sintered system were investigated. The changes in conductivity and gas sensitivity of the thick film were discussed in according to the phase change of the mixed-powder sintered at 650℃ for 2h examined by XRD. The result showed that the nanoparticles could take place solid-phase reaction at lower sintering temperature and the conductivity and gas sensitivity of the thick film could be modified and controlled by newly formed complex oxide, i.e., ZnSb2O6 and Zn2.33Sb0.67O4.