“…More TMDs can be obtained via changing chalcogen (such as S, Se, Te) and transition metals (Mo, W, Nb, V) [5]. Besides, different MoS 2 based morphologies have been successfully synthesized, such as MoS 2 nanorods [6], nanopetals [7], nanopowder [8] and nanotubes [9]. Recently, a new monolayer 2D TMDs Janus MoSSe, with out-of-plane asymmetry, has been successfully fabricated [10,11].…”