Preparation of ZnS thin films by the pulsed electrochemical deposition

We deposited ZnS thin films on Sn-doped In2O3-coated glass substrate using normal and pulsed electrochemical deposition (ECD) from aqueous solutions containing Na2S2O3 and ZnSO4 with two different compositions. Generally, the films deposited using pulsed deposition has much better surface morphology and optical properties than those deposited by normal ECD. The film deposited from the ZnSO4-rich solution was of stoichiometric composition and after 300 °C annealing gives high transparency.