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Product Code M2154C1-1g
Price £350 ex. VAT

Low price, high purity 2D metal vanadium diselenide powder and crystals

For the development of next-generation electronics, optoelectronics, and nanotechnology

Technical Data | MSDS | Structure | Literature and Reviews | Related Products | Resources and Support

Vanadium diselenide (VSe2), CAS number 12299-51-3, is a TMDC material. With a sandwiched layer structure, its layers are bound by weak van de Waals forces which allow the isolation of each layer from its bulk crystals (or powder) to reduce the dimensionality - by either mechanical or chemical exfoliation.

In bulk form VSe2 is paramagnetic. It commonly condenses in the 1T structure, which is metallic with no optical bandgap. Monolayer VSe2 has magnetic characteristics and a lower work-function at its edge. However, strong room-temperature ferromagnetism has been observed in VSe2 monolayers grown on van der Waals substrates such as graphite.

High Purity Vanadium Diselenide

High Purity

>99.999% Vanadium Diselenide Purity

used to produce single or few-layer sheets


Used to produce single or few-layer sheets

Low Cost 12299-51-3

Low Cost

Low Cost Vanadium Diselenide

Different Forms of Vanadium Diselenide

Powder & Crystal

Different Forms of Vanadium Diselenide

We supply low price vanadium diselenide in several different forms for a range of applications.

Vanadium diselenide powder

Vanadium Diselenide Powder

Can be used for preparation of vanadium diselenide nanoplates and ultrathin films

Sold by weight

≥99.995% purity

From £350

Vanadium diselenide crystals by size

Vanadium Diselenide Crystals by Size

Can be used to produce single or few-layer vanadium diselenide sheets via mechanical or liquid exfoliation

Small (≥10 mm2) or medium (≥25 mm2) crystals available*

≥99.999% purity

From £520

*Typical representative size, areas/dimensions may vary

Bulk single vanadium diselenide crystals are most commonly used as sources from which single or few-layer sheets can be obtained via either mechanical or liquid exfoliation. Single vanadium diselenide crystal or films produced from such crystals are suitable for study using atomic force microscopy or transmission electron microscopy

Vanadium diselenide powder can also be used to prepare VSe2 nanosheets and nanoparticles by liquid-exfoliation (normally assisted by sonication), especially when it is the case of foreign elements such as lithium or sodium cations being inserted between layers by the process of intercalation. Liquid exfoliation can provide mass production of such products.

Technical Data

CAS Number 12299-51-3
Chemical Formula VSe2
Molecular Weight 208.86 g/mol
Bandgap ~1.4 eV (indirect)
Preparation Synthetic - Chemical Vapour Transport (CVT)
Structure Octahedral (1T)
Electronic Properties Metal
Melting Point N/A
Colour Dark brown
Synonyms Vanadium selenide, Bis(selanylidene)vanadium
Classification / Family Transition Metal Dichalcogenides (TMDCs), 2D Semiconductor materials, Charge Density Wave (CDW), Hydrogen Revolution Reactions (HER), Nano-electronics, Nano-photonics, Photovoltaic, Materials science

Product Details

Form Purity
Powder ≥99.995%
Crystal ≥99.999%

Pricing Table

Product Code Form Size/Weight* Price
M2154C1 Powder 1 g £350
M2154A10 Crystal Small (≥10 mm2) £520 ea.
M2154A25 Crystal Medium (≥25 mm2) £850 ea.

*Typical representative size, areas/dimensions may vary

Shipping is free for qualifying orders.

MSDS Documents

Vanadium diselenide powder MSDSVanadium diselenide powder

Vanadium diselenide crystal MSDSVanadium diselenide crystal

Structure of Vanadium Diselenide

In nature, vanadium diselenide (VSe2) exists only in 1T as its thermodynamically-stable phase (space group: P63mc). Single-layer VSe2 film consists of stacks of one layer of hexagonally close-packed transition metal vanadium atoms sandwiched between two layers of chalcogen selenium atoms in the sequence of Se–V–Se. The metal atoms are octahedrally coordinated and covalently bonded to the chalcogen atoms. The layers are stacked together by van der Waals (vdW) forces. Like black phosphorus and MoSe2, these can be exfoliated into 2D thin layers.

top and side view of valadium diselenide structure
Top and side view of single-layer vanadium diselenide (VSe2)

Literature and Reviews

  • Field-Effect Tuned Adsorption Dynamics of VSe2 Nanosheets for Enhanced Hydrogen Evolution Reaction, M. Yan et al., Nano Lett. 2017, 17, 4109−4115 (2017); DOI: 10.1021/acs.nanolett.7b00855.
  • Electronic Structure and Enhanced Charge-Density Wave Order of Monolayer VSe2, J. Feng et al., Nano Lett., 18, 4493−4499 (2018); DOI: 10.1021/acs.nanolett.8b01649.
  • Emergence of a Metal−Insulator Transition and High-Temperature Charge-Density Waves in VSe2 at the Monolayer Limit, G, Duvjir et al., Nano Lett. 2018, 18, 5432−5438 (2018); DOI: 10.1021/acs.nanolett.8b01764.

We stock a wide range of 2D materials available to purchase online. Please contact us if you cannot find what you are looking for.

Resources and Support

Viscoelastic Transfer of 2D Material Using PDMS

Viscoelastic transfer using polydimethylsiloxane (PDMS) stamps is one of the methods used for the deterministic placement of 2D materials and the fabrication of van der Waals heterostructures. It relies on the viscoelasticity of PDMS, which behaves as an elastic solid on short time scales, but as a viscous fluid on long time scales.

Learn more...
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