MoS2, or molybdenum disulfide, is a layered material composed of molybdenum and sulfur atoms. It belongs to a class of compounds known as transition metal dichalcogenides (TMDs). MoS2 is notable for its unique properties, including excellent electrical conductivity and mechanical strength, making it useful in various applications such as electronics, energy storage, and catalysis. In its bulk form, MoS2 is a semiconductor, but when reduced to a monolayer, it exhibits remarkable changes in its electronic properties, becoming a direct bandgap semiconductor. This characteristic has sparked interest in MoS2 for use in next-generation devices, including transistors and photodetectors.