Established that, modification of architecture and layers granulometric composition take place after exposure of chemically deposited film CdS, obtained in presence of sodium citrate, and ethylenediamine, for 1-9 hours in the aqueous solution of lead acetate. Cadmium sulfide thin films obtained from citrate-ammonia systems are more prone to of transformation due to the lower order in the crystallites arrangement on the substrate. The formation of supersaturated solid solutions Pb 1-xCd xS (0.105