Recent progress of two-dimensional metallic transition metal dichalcogenides: Syntheses, physical properties, and applications

Abstract

Two-dimensional (2D) metallic transition metal dichalcogenides (MTMDCs) are emerging as an appealing class of materials for a wide range of research topics, including electronics, spintronics, and energy-related fields, in view of their unique physical and chemical properties. Notably, the controlled synthesis of such promising materials is a prerequisite. In this Perspective, we review the up-to-date advances regarding the syntheses and physical properties of 2D MTMDCs, as well as their multifunctional applications. First, a variety of synthetic strategies of 2D MTMDCs, such as chemical exfoliation, chemical vapor transport, atomic layer deposition, molecular beam epitaxy, and chemical vapor deposition, are systematically summarized. Second, the fundamental physical properties of 2D MTMDCs are introduced, including charge density wave order, ferromagnetism, and superconductivity. Third, the versatile applications of 2D MTMDCs in electronic devices and energy-related fields are discussed. Finally, the challenges about the exploration of controlled syntheses, interesting physical issues, and multifunctional applications are highlighted, and future directions are also proposed. We believe that this Perspective is comprehensive and insightful for the controllable syntheses, physical property characterizations, and application exploitations of 2D MTMDCs.

In Situ Exfoliation Method of Large‐Area 2D Materials

“…Among these, TMDCs are particularly interesting as semiconducting single layer (SL) TMDCs possess a direct band gap in the visible range, [10,20] which makes them exceptional candidates for opto-electronic devices, [21,22] and metallic SL TMDCs showcase properties such as 2D Mott physics, superconductivity, and topological phases. [23] Furthermore, many physical properties of 2D materials are sensitive to careful interface engineering through the stacking of layers into homo-and heterostructures as well as the adjustment of the twist angle between adjacent layers. [24][25][26][27][28] To effectively study and work with 2D materials, the research field relies heavily on efficient methods of producing high-quality samples.…”

VTe2: Broadband Saturable Absorber for Passively Q-Switched Lasers in the Near- and Mid-Infrared Regions

“…TMDCs possess significant modulation depth and exhibit remarkable stability, thereby presenting an appealing alternative to PQS lasers. Additionally, TMDCs possess a suitable band gap for infrared optoelectronics applications, which can be tailored due to their layer-dependent band structure, effectively addressing the deficiency of zero-bandgap graphene in the realm of two-dimensional materials. ,− Within the family of 2D TMDCs, group VB metal tellurides (VTe 2 , NbTe 2 , and TaTe 2 ) have garnered attention as promising platforms for investigating fundamental physical phenomena, including superconductivity, electrocatalysis, and quantum spin Hall effects, due to the strong electron coupling among all neighboring M 4+ –M 4+ pairs. , Specially, VTe 2 is an intriguing member of the 2D metal tellurides family, characterized by its room-temperature ferromagnetism, charge density wave ordering, and topological properties . The remarkable conductivity, flexibility, and catalytic prowess of 2D 1T-VTe 2 have paved the way for its outstanding performance in various electrode-related applications. , Furthermore, electric fields can induce phase transitions, resulting in nonvolatile and controllable resistance states, which implies that 1T-VTe 2 thin films hold promise as innovative charge density wave materials for memory devices, enabling logic state switching via electric field manipulation. , The VTe 2 /MXene heterostructure demonstrated improved energy storage performance resulting from the synergistic interplay between the 3D network of VTe 2 and MXene .…”

Molybdenum disulfide, exfoliation methods and applications to photocatalysis: a review

“…4 Among the 2D materials, transition metal dichalcogenides (TMDCs), oen referred to as "the next-generation graphene", are gathering increasing interest within the scientic community due to their exceptional properties that cater to a wide range of applications: eld-effect transistors (FETs), inverters, photodetectors, light-emitting diodes (LEDs), drug carriers, and bio-detection platforms. [5][6][7][8][9][10] Materials in this class have the chemical formula MX 2 , where M represents a transition metal atom (groups 4-12 in the periodic table) and X is a chalcogen (group 16), are called Transition Metal Dichalcogenide (TMDC). They are divided into two categories: metallic TMDCs (MTMDCs) and semiconducting TMDCs (STMDCs).…”