Nanostructured Transition Metal Dichalcogenides: Synthesis and Properties

Transition metal dichalcogenides (TMDCs) have emerged as a versatile platform for nanostructured materials, encompassing two-dimensional monolayers, one-dimensional nanotubes and zero-dimensional quantum dots. Synthetic strategies span chemical vapour deposition, hydrothermal and microwave-assisted methods, as well as chemical exfoliation and template-directed growth to yield high-quality crystals with controlled thickness, diameter and composition. Compositional tuning, curvature and defect engineering enable deliberate modulation of electronic band structure, optical absorption and excitonic behaviour. Strain-induced flexoelectric effects and interlayer coupling in heterostructures allow the transition between direct and indirect band gaps, while Janus architectures break inversion symmetry, opening pathways to nonreciprocal transport and enhanced photocurrents. These nanostructures exhibit exceptional field emission characteristics, sizeable nonlinear optical responses, and catalytic activity in hydrogen evolution. Recent advances in diameter-tailored nanotubes reveal curvature-controlled band alignment transitions, whereas mixed-dimensional assemblies demonstrate efficient exciton transfer for energy harvesting and quantum applications. The global impact of nanostructured TMDCs spans flexible electronics, optoelectronics, sensors, catalysis and superconducting devices, underscoring their broad technical promise.

Research from Nature Portfolio

Recent studies have demonstrated efficient exciton transfer in mixed-dimensional heterostructures combining two-dimensional tungsten diselenide and one-dimensional carbon nanotubes, where band alignment engineering yields a pronounced reservoir effect that funnels long-lived excitons into the nanotube domain under broadband excitation. Investigations into WS2 nanotubes have revealed a giant bulk photovoltaic shift current in the infrared region, driven by interwall charge transfer in Janus-type configurations and captured via real-time time-dependent density functional theory simulations. Foundational work on chiral transition metal dichalcogenide nanotubes has uncovered nonreciprocal superconducting transport under ionic gating, exhibiting quantum Little-Parks oscillations and inversion symmetry–breaking effects associated with nanotube chirality.

Nanostructured Transition Metal Dichalcogenides: Synthesis and Properties publication trend

The graph below shows the total number of articles in nanostructured transition metal dichalcogenides: synthesis and properties across all publications each year (not limited to Nature Index journals).

Technical terms

Transition metal dichalcogenide (TMDC): Layered materials composed of transition metals sandwiched between chalcogen atoms, exhibiting tunable electronic and optical properties.

Exciton: Bound state of an electron and a hole within a semiconductor, responsible for characteristic optical absorption and emission.

Heterostructure: Assembly of two or more dissimilar materials creating interfaces that yield novel electronic or optical phenomena.

Flexoelectricity: Polarisation induced by strain gradients in non-centrosymmetric or curved nanostructures.

Janus structure: Asymmetric layered material with different atoms or functional groups on opposite faces, breaking inversion symmetry.

Band alignment: Relative energy positions of conduction and valence bands at an interface, governing charge separation and transfer.

Cavity resonance: Optical mode confined within a nanostructure, enhancing light–matter interactions and exciton coupling.

References

1. MoxWx–1S2 Nanotubes for Advanced Field Emission Application. Advanced Functional Materials (2023).
2. Resonant exciton transfer in mixed-dimensional heterostructures for overcoming dimensional restrictions in optical processes. Nature Communications (2023).
3. Giant bulk photovoltaic effect driven by the wall-to-wall charge shift in WS2 nanotubes. Nature Communications (2022).
4. Superconductivity in a chiral nanotube. Nature Communications (2017).
5. Curvature-controlled band alignment transition in 1D van der Waals heterostructures. npj Computational Materials (2023).