Influence of Sn concentration on the physical properties of CdO:Sn thin films deposited by spray pyrolysis

Sn doped cadmium oxide thin films were prepared on glass substrates by the spray pyrolysis (SP) method from a cadmium acetate aqueous solution. The Sn (IV) concentration in the solution was varied up to 2 wt%, keeping constant the other growth parameters. The structural, electrical and optical properties of the films were studied as a function of Sn concentration. The best results were obtained for CdO films doped with 1% Sn nominal concentration. The properties of these films are influenced by the air annealing performed at 450 °C for 30–120 min. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)