Molybdenum Sulfur, or MoS2, is a promising and highly interesting material for many potential applications in electronics, sensing, microwave, and terahertz. This material has a number of advantages over graphene, mainly the band gap properties and its high electrical conductivity.

Synthesizing Methods

There are a variety of synthesizing methods for MoS2 including mechanical exfoliation, chemical intercalation, and thermal sulfidation of dissolved sulfur in an aqueous solution. These methods have long been used to produce bulk crystals but are less scalable.

Monolayers: a potential for flexible electronics and optical nanodevices

In the past, it was difficult to obtain MoS2 monolayers but recent methods have made this possible. These include mechanical and chemical intercalation of bulk crystals by peeling off layers, and thermal sulfidation that uses evaporated sulfur as a precursor. These processes are said to reduce the effect of gas flows that occur in CVD, and therefore, yield self-aligned structures.

Photoluminescence: a potential for optical applications

A key factor that makes MoS2 a desirable material for optical applications is its tunable bandgap that changes according to the thickness, structure, and doping of its layers. Different band gaps result in tunable photoresponsivity (R), specific detectivity, and response time.

Synthesis of Multilayers and Monolayers: a potential for optoelectronic applications

In order to prepare MoS2 multilayers or monolayers, the layers must be synthesized in a way that allows them to bond together. This requires high temperatures and pressures that might damage the material if not carefully controlled.