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Product Code M2302C1-1g
Price £350 ex. VAT

Low price, high purity 2D metal niobium 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

Niobium diselenide (NbSe2), CAS number 12034-77-4, belongs to group-V two-dimensional transition metal dichalcogenides (TMDCs). It is one of the intensively studied TMDCs due to the particular coexistence of charge-density waves (TCDW = 33 K) and superconductivity (TC = 7.2 K) in atomically thin NbSe2 nanosheets at low temperatures.

NiPS3 high purity Crystal

High Purity

NbSe2 ≥99.999% high purity crystal

Powder & Crystal 12034-77-4

Powder & Crystal

Powder & Crystal Forms

Low Cost Niobium Diselenide (NbSe2)

Low Cost

Low Cost Niobium Diselenide

Niobium Diselenide Applications


Development of next-generation electronics, optoelectronics, and nanotechnology

Bulk NbSe2 has a lamellar crystal architecture to form a two-dimensional hexagonal lattice. Each monolayer NbSe2 is composed of three layers of atoms, a niobium layer sandwiched between two selenide layers with a covalent bond between Nb and Se in the Se–Nb–Se sequence. Each Nb atom sits inside a trigonal prismatic cage formed by six nearest neighbouring Se atoms while the Nb atoms form a perfect hexagonal close-packed structure.

NbSe2 has low ion diffusion barrier when applied in energy-storage systems, such as traditional lithium-ion batteries, and novel sodium-ion batteries (SIBs) and magnesium-ion batteries (MIBs). Exfoliated NbSe2 nanoparticles and nanosheets find applications as electrodes for solar cells, catalysts for chemical reactions and hydrogen evolution reactions (HER),  conducting lubricant in vacuum and various nonlinear and optoelectronics devices.

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

Niobium diselenide powder

Niobium Diselenide Powder

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

Sold by weight

≥99.995% purity

From £220

Niobium diselenide crystals by size

Niobium Diselenide Crystals by Size

Can be used to produce single or few-layer niobium 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 niobium 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 niobium diselenide crystal or films produced from such crystals are suitable for study using atomic force microscopy or transmission electron microscopy.

Niobium diselenide powder can also be used to prepare NbSe2 nanosheets and nanoparticles by liquid-exfoliation (normally assisted by sonication or microwave heating). Foreign elements or materials can be intercalated into niobium diselenide layered structure to change its conductivity, heat capacity and superconductivity. 

Technical Data

CAS Number 12034-77-4
Chemical Formula NbSe2
Molecular Weight 250.83 g/mol
Bandgap n.a.
Preparation Synthetic - Chemical Vapour Transport (CVT)
Structure Hexagonal
Electronic Properties 2D metal and superconductor 
Melting Point >1300 °C
Colour Dark Grey/Black
Synonyms Niobium(IV) selenide, Columbium selenide, Bis(selanylidene)niobium.
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
M2302C1-500mg Powder 500 mg £220
M2302C1-1g Powder 1 g £350
M2302A10 Crystal (2H-NbSe2) Small (≥10 mm2) £520 ea.
M2302A25 Crystal (2H-NbSe2) Medium (≥25 mm2) £850 ea.

*Typical representative size, areas/dimensions may vary

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MSDS Documents

Niobium diselenide powder MSDSNiobium diselenide powder

Niobium diselenide crystal MSDSNiobium diselenide crystal

Structure of Niobium Diselenide

Bulk NbSe2 exhibits three stacking polytypes: 2H, 4H, and 3R phases and its monolayer 1T-NbSephase is a Mott insulator.

Bulk NbSe2 crystallizes into the 2H phase (trigonal prismatic structure, D3h) and 2H-NbSe2 is metallic layered material. Nb atoms are surrounded by Se atoms following a trigonal prismatic coordination with Nb being located in the centre of the trigonal prismatic sites. The Se-Nb-Se layers that make up each packet are covalently bound. The coupling between pairs of packets is bound by van der Waals forces.
2H-NbSe2 tops and side view of crystal structure
Top and side view of single-layer niobium diselenide (2H-NbSe2)

Literature and Reviews

  1. High-quality monolayer superconductor NbSe2 grown by chemical vapour deposition, H. Wang et al., Nat. Commun., 8, 394 (2017); DOI: 10.1038/s41467-017-00427-5.
  2. Anisotropic band splitting in monolayer NbSe2: implications for superconductivity and charge density wave, Y. Nakata et al., npj 2D Mater Appl 2, 12 (2018); DOI: 10.1038/s41699-018-0057-3.
  3. Signature of coexistence of superconductivity and ferromagnetism in two-dimensional NbSe2 triggered by surface molecular adsorption, X. Zhu et al., Nat. Commun., 7, 11210 (2017); DOI: 10.1038/ncomms11210.

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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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