Élaboration et caracterisation des films ZnS par bain chimique

Abstract

The present work deals with the study of ZnS thin film synthesis by chemical bath deposition technique (CBD). The latter is known to be cheap and simple which motivates our choice of this method. We have used Zinc sulfate (ZnSO4), Thiourea (CS(NH2)2), ammonia (NH3) and hydrazine (N2H4). thin films were prepared with two different parameters such as the pH and the solution temperature. The structural, optical and electrical properties of the obtained films were characterized by means of several techniques. From structural studies of ZnS films we inferred that ZnS films have a cubic structure with a preferential orientation (111). The optical studies reveal that ZnS films have a large transparency in the visible range. This comforts their using as buffer layer in thin films solar cells.