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(a) Structure of a hexagonal TMD monolayer. M atoms are in black and X atoms are in yellow. (b) A hexagonal TMD monolayer seen from above. Transition-metal dichalcogenide (TMD or TMDC) monolayers are atomically thin semiconductors of the type MX 2, with M a transition-metal atom (Mo, W, etc.) and X a chalcogen atom (S, Se, or Te).
2D transition metal dichalcogenides are often used in applications such as flexible and stretchable electronics, where an understanding of their mechanical properties and the operational impact of mechanical changes to the materials is paramount for device performance.
The potential applications of transition metal dichalcogenides in solar cells and photonics are often discussed. [13] Bulk WSe 2 has an optical band gap of ~1.35 eV with a temperature dependence of −4.6 × 10 −4 eV/K. [14] WSe 2 photoelectrodes are stable in both acidic and basic conditions, making them potentially useful in electrochemical ...
MoS 2, the most common metal dichalcogenide, adopts a layered structure. Metal dichalcogenides have the formula ME 2, where M = a transition metal and E = S, Se, Te. [7] The most important members are the sulfides. They are always dark diamagnetic solids, insoluble in all solvents, and exhibit semiconducting properties. Some are superconductors ...
As in graphene, the layered structures of MoS 2 and other transition metal dichalcogenides exhibit electronic and optical properties [48] that can differ from those in bulk. [49] Bulk MoS 2 has an indirect band gap of 1.2 eV, [50] [51] while MoS 2 monolayers have a direct 1.8 eV electronic bandgap, [52] supporting switchable transistors [53 ...
2D materials in all their forms: graphene, transition metal dichalcogenides, phosphorene and molecular systems, including relevant allotropes and compounds, and topological materials; fundamental understanding of their basic science; synthesis by physical and chemical approaches
Siegenite (also called grimmite, or nickel cobalt sulfide) is a ternary transition metal dichalcogenide compound with the chemical formula (Ni,Co) 3 S 4.It has been actively studied as a promising material system for electrodes in electrochemical energy applications due to its better conductivity, greater mechanical and thermal stability, and higher performance compared to metal oxides ...
Nevertheless, recent rapid advances in 2D nanomaterials have raised important yet exciting questions about their interactions with biological moieties. 2D nanoparticles such as carbon-based 2D materials, silicate clays, transition metal dichalcogenides (TMDs), and transition metal oxides (TMOs) provide enhanced physical, chemical, and ...