The Theoretical Calculation of Optimum Doping Content for SnO_2∶Sb Gas Sensor Films

Analysis of experimental antimony doped stannic oxide gas sensor films with various doping levels is presented. The relationship among the physical property, crystal structure, preparation method and doping content is established to be a parabola equation. The extreme value of this equation determines the optimum doping content. The optimum doping content of antimony doped stannic oxide films determines by this quantitative method agrees with the experimental results.