Electrodeposition of Sn, Se, SnSe and the material properties of SnSe films

A detailed account of the electrochemistry involved in the deposition of Sn , Se and SnSe films is presented. The redox reactions and the polarization curves of Sn and Se were studied to fix the pH and potential values V (NHE) to get uniform deposition. Films were cathodically deposited at 55 degrees C. XRD studies show an orthorhombic structure. Films showed an indirect ba nd-gap of 1.05 eV. Surface morphological studies were carried out using SEM , and the stoichiometry was estimated from XPS analysis. Effect of annealin g in air at 200 degrees C has been reported. (C) 1999 Elsevier Science S.A. All rights reserved.