Optical, electrical and structural properties of zinc stannate (zn2sn04) thin films prepared by spray pyrolysis technique.

Abstract

Highly transparent and conducting Zn2Sn04 films have been prepared by spray pyrolysis technique. Films grown at a substrate temperature of 440°C exhibit the best optical and electrical properties. The microcrystals of these films had a preferred orientation along c-axis normal to the surface. The direct band gap was found to be 3.1 eV. Hall effect studies on these films yielded a carrier concentration of 1.2x1020 cm" and a mobility of 2.5 cm2/v .sec. These films have a potential to perform as good transparent conductors and can be used in solar energy devices such as solar cells and solar collectors.