Low-Temperature Growth of Transparent and Conducting Tin Oxide Film by Photo-Chemical Vapor Deposition

Abstract
For the first time, photo-CVD of transparent and conducting SnO2 films has been achieved under irradiation by a low-pressure Hg lamp. It was confirmed that both resonance lines (254 nm, 185 nm) are effective for the activation of CVD-sources (O2, SnCl4, SbCl5). The structural, electrical and optical properties of undoped and Sb-doped SnO2 films prepared by the photo-CVD method were evaluated. Resistivity as low as 5.48×10-3 ohm·cm with high optical transmission (80%) was obtained in Sb-doped SnO2 films (80 nm in thickness).