Abstract: The research on the preparation and application of nano transparent conductive materials has attracted great attention abroad, especially in the United States and Japan, and has now entered the production stage. However, the research in this field in China has just started, and the products mainly depend on imports. The purpose of this test is to improve product performance and replace imports. Antimony-doped tin dioxide (ATO) nano-conductive powder was prepared by alcoholysis with SnCl _ 45h2o and SbCl_3 as raw materials. The photoelectric properties of the powder were improved by doping ATO with various oxides, and remarkable results were obtained. The hydrolysis process of alkoxide was systematically studied, and the effects of alcoholization temperature, hydrolysis temperature, doping concentration, hydrolysis acidity, surfactant type and calcination temperature on the particle size and electrical properties of powder were investigated. The experimental results are discussed, the experimental conditions are optimized, and a comprehensive experimental study is carried out. In order to improve the performance of the powder, we tried to dope various oxides. It was found that the resistivity of doped manganese oxide powder decreased by 57.9% and that of doped zinc oxide powder decreased by 54.3% in a certain doping range. When doped with zirconia, the transmittance of the film will decrease by 12%. Doped with zinc oxide, the transmittance of the film decreased by 7.33%. Doped zirconia, manganese oxide and zinc oxide have little effect on the color of powder. However, doping titanium oxide, silicon oxide, iron oxide and chromium oxide greatly changes the color of the powder, especially with the increase of doping amount, the color of the powder tends to be white. Doping silicon oxide and iron oxide significantly reduces the particle size, and silicon oxide makes the film have better adhesion to the substrate. Doping zirconia will slightly reduce the particle size of the powder, doping manganese oxide and titanium oxide has little effect on the particle size of the powder, while doping chromium oxide and zinc oxide will increase the particle size of the powder. All doped oxides will reduce agglomeration. The powder was characterized by differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and specific surface area measurement, and the resistivity and light transmittance of the powder were measured. Under the optimum experimental conditions, the grain size of the comprehensive sample is 5.5nm, the actual grain size is 7.95nm, the resistivity is1.094 Ω cm, the powder crystal is still tetragonal and the light transmittance is 70.5%. The resistivity is 32% lower than that of undoped powder and the transmittance is 6% lower. All performance indexes meet the production requirements. The new method has the advantages of simple process equipment, less pollution, low cost and high product quality, and can replace imported products. Created a new process suitable for production and development.
Keywords: resistivity, light transmittance, particle size of doped nano-powder.