The region of lead and tin selenide co-deposition using selenourea has been examined by calculation of the ionic equilibrium in the citrate-ammonia system. The formal kinetic equations for the rates of formation of the lead and tin selenides have been determined. Thin films of substitutional Pb1-xSnxSe (0

Keywords:Substitutional solid solutions;Lead selenide;Tin selenide;Hydrochemical deposition;Kinetic studies;Crystal structure;Band gap