Effect of temperature on thickness and Resistivity of II-VI solid solution of CdSe0.75Te0.25 thin films by spray pyrolysis

ABSTRACT CdSe0.75Te0.25 thin films deposited by spray pyrolysis using aqueous solution of cadmium chloride, selenium dioxide and Tellurium tetrachloride of 0.02 M of each at different substrate temperature. From the resistivity against inverse temperature activation energy calculated. It was observed that activation energy decreases as temperature increases. But thickness of the films increases, if the temperature of the films increases upto the optomise temperature. It indicates the increases of grain size of the this films and grain boundary width decreases. This may due to the oxygen acceptor level are very shallow from the conduction band.