Studies on tin oxide films prepared by electron beam evaporation and spray pyrolysis methods

[摘要] Transparent conducting tin oxide thin films have been prepared by electron beam evaporation and spray pyrolysis methods. Structural, optical and electrical properties were studied under different preparation conditions like substrate temperature, solution flow rate and rate of deposition. Resistivity of undoped evaporated films varied from 2.65 Ã�? 10^-2 ð›�?-cm to 3.57 Ã�? 10^-3 ð›�?-cm in the temperature range 150â€�??200°C. For undoped spray pyrolyzed films, the resistivity was observed to be in the range 1.2 Ã�? 10^-1 to 1.69 Ã�? 10^-2 ð›�?-cm in the temperature range 250â€�??370°C. Hall effect measurements indicated that the mobility as well as carrier concentration of evaporated films were greater than that of spray deposited films. The lowest resistivity for antimony doped tin oxide film was found to be 7.74 Ã�? 10^-4 ð›�?-cm, which was deposited at 350°C with 0.26 g of SbCl₃ and 4 g of SnCl₄ (SbCl₃/SnCl₄ = 0.065).

[学科分类] 材料工程

[关键词] Spray pyrolysis;electron beam evaporated films;tin oxide films;transparent conducting coatings;optical and electrical properties.