EPITAXIAL ELECTRODEPOSITION OF CADMIUM SELENIDE THIN-FILMS ON INDIUM-PHOSPHIDE SINGLE-CRYSTAL

Epitaxial CdSe layers were electrodeposited from a standard aqueous el ectrolyte onto a (111) InP single crystal. By using various characteri zation techniques (RHEED, XRD, HREM, ...) it was demonstrated that a g ood epitaxy can be achieved by monitoring the experimental parameters very carefully, in particular the selenium concentration in the electr olyte and the deposition potential. For optimum conditions, the compos ition of the semiconducting layer is close to stoichiometry and the ca rrier density is around 1 x 10(17) cm(-3).