Deposition of Molybdenum Disulfide Thin Film on a Gold Surface

Abstract

The restacking of molybdenum disulphide (MoS2) on a gold surface is reported. Thin films were obtained by spontaneous deposition from single-layer suspensions of the sulfide on a Quartz Crystal Microbalance gold electrode at room temperature. Quartz crystal frequency shift, contact angle, and Atomic Force Microscopy measurements indicates the films are constituted by islands in which the MoS2 layers are arranged with their basal planes oriented perpendicularly to the gold surface. Cyclic voltammetry studies indicate that lithium can be inserted=extracted in the Au= MoS2 electrode. The effect on the electrochemical behavior of the MoS2 film of both electrode surface morphology and presence of water in the medium are discussed