Niobium Diselenide (NbSe2) Powder and Crystals
CAS Number 12034-77-4
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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.
High Purity
NbSe2 ≥99.999% high purity crystal
Powder & Crystal
Powder & Crystal Forms
Low Cost
Low Cost 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
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
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
Shipping is free for qualifying orders.
MSDS Documents
Structure of Niobium Diselenide
Bulk NbSe2 exhibits three stacking polytypes: 2H, 4H, and 3R phases and its monolayer 1T-NbSe2 phase 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.Literature and Reviews
- 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.
- 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.
- 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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