Indium tin oxide(ITO) nanoparticles are prepared by the co-precipitation method with the material of stannic chloride andIndium metal. The effect of the ending point pH, reaction temperature, aging time,thermal oxidation temperature and time are studied. Nanoparticles analysis set up is used to measure the size and the range of nanopowders. After a serious of experiments, it is found that when the ending point pH is 8,the reaction temperature is 60℃, thermal oxidation temperature and time are400℃ and 2h respectively are the best conditions to prepare ITO nanopowders. And in those conditions, the particles show good dispersion(68nm) and a narrow sizedistribution(within 10nm).

After produced ITO nanopowders, I attempt to prepare ITO target by the method of normal pressure sintering. Alth...[ Read more ]

Indium tin oxide(ITO) nanoparticles are prepared by the co-precipitation method with the material of stannic chloride andIndium metal. The effect of the ending point pH, reaction temperature, aging time,thermal oxidation temperature and time are studied. Nanoparticles analysis set up is used to measure the size and the range of nanopowders. After a serious of experiments, it is found that when the ending point pH is 8,the reaction temperature is 60℃, thermal oxidation temperature and time are400℃ and 2h respectively are the best conditions to prepare ITO nanopowders. And in those conditions, the particles show good dispersion(68nm) and a narrow sizedistribution(within 10nm).

After produced ITO nanopowders, I attempt to prepare ITO target by the method of normal pressure sintering. Although the temperature is higher than other methods (the highest T is about 1650℃),the process is complicated, safer, and easier to industrialize. By controlling the flow of oxygen into the furnace in the whole sintering atmosphere, the green ones are kept from decomposed to get high quality ITO targets. Using SEM,it is very easy to find the stomata are smaller and are almost invisible. Using displacement method and four probe methods, we can get the density and volume resistivity are 7.084g/cm3 and 1.61^*10^-4Ω.cm respectively.