2D Janus Transition Metal Dichalcogenides: Properties and Applications

The successful fabrication of Janus transition metal dichalcogenide (TMD) monolayer has sparked extensive research interests in various fields, such as nanoelectronics, optoelectronics, valleytronics, and catalysis. TMDs can not only inherit the advantages conventional but also produce novel properties which are different from their counterparts. breaking vertical mirror symmetry induce a variety properties, Rashba spin splitting, piezoelectricity, long exciton lifetime. Moreover, intrinsic electric field that originates asymmetry serve superior platform for tuning interlayer coupling when forming van der Waals structures. In this mini review, recent key progresses 2D TMDs, including fundamental potential applications, briefly summarized, existing challenges presented.