This study helps to new researchers to learn about oxide semiconducting materials and its some properties, the doping of these two materials gave Indium tin oxide materials which has plenty of optoelectronic applications.Indium tin oxide (In2O3: Sn) is an n-type semiconducting material with wide band gap. With oxygen deficiency they become conducting whereas in stoichiometric condition insulators. The resistance variation when exposed to gaseous atmosphere plays crucial role in gas sensing applications of these materials. Gas sensing materials should have large surface area so that contacting...