ELECTRODEPOSITION AND PHOTOVOLTAIC PROPERTIES OF ZINC CADMIUM SELENIDE THIN FILMS

The synthesis of polycrystalline thin films of zinc cadmium selenide from basic aqueous selenosulfite solution by electrodeposition on stainless steel and Ti substrates is described. The influence of deposition parameters on the aim formation and deposition mechanism based on cyclic voltametry and composition analysis are discussed. It has been observed that the reduction of Cd - selenocomplex leads to the CdSe nucleation process followed by Se2- formation from the reduction of SeSO32- and its subsequent reaction with metal ions results in the metal selenide film formation. The behaviour of zinc cadmium selenide thin alms as absorber material in a photoelectrochemical cell with polysulfide as an electrolyte and as a window material in CdTe photovoltaic cell are also described.