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Product Code M2110A10
Price £520 ex. VAT

Tungsten Disulfide Crystal, high purity 2D semiconducting TMDCs material

For applications in light-emitting devices, solar cells, and photodetectors

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

Like other TMDC family members, tungsten disulfide (WS2, CAS number 12138-09-9) has a two-dimensional structure. It consists of a layer of hexagonally-arranged tungsten atoms positioned between two layers of hexagonally-arranged sulphur atoms.

Individual layers are held together by Van der Waals forces. This makes it possible for single to few-layer ultra-thin films to be prepared from bulk crystals using mechanical exfoliation techniques. The primitive unit cell of WS2 consists of one tungsten atom and two sulphur atoms, arranged in a trigonal prismatic configuration.

High Purity Tungsten Disulfide

High Purity

≥99.999% Crystal Purity

2D semiconducting TMDCs material

2D Semiconductor

2D semiconducting TMDCs material

Low Cost 12138-09-9

Low Cost

Low Cost Tungsten Disulfide

Applications of Tungsten Disulfide


Used to prepare monolayer and few-layer

With a photoluminescence (PL) quantum yield that is almost two orders of magnitude higher at room temperature than MoS2, WS2 is one of the most popular 2D semiconducting TMDCs materials, and is widely explored for applications in light-emitting devices, solar cells, and photodetectors.

Technical Data

CAS Number 12138-09-9
Chemical Formula WS2
Molecular Weight 247.97 g/mol
Bandgap 1.4 - 2.01 eV [1]
Preparation Synthetic - Chemical Vapour Transport (CVT)
Structure Hexagonal
Electronic Properties 2D semiconductor
Melting point 1250 °C (lit.)
Colour Black
Synonyms Tungsten sulphide, Tungsten sulfide, Tungsten(IV) sulfide
Classification / Family Transition metal dichalcogenides (TMDCs), 2D semiconductor materials, Nano-electronics, Nano-photonics, Materials science

Product Details

Form Purity
Crystal ≥99.999%

Pricing Table

Product Code Form Size* Quantity (EA) Price
M2110A10 Crystal Small (≥10 mm2) 1 £520
M2110A25 Crystal Medium (≥25 mm2) 1 £850
M2110A00 Crystal Large** (≥100 mm2) 1 £1750

*Typical representative size, areas/dimensions may vary

**Item with a lead time of 2 - 3 weeks, please contact for more information

MSDS Document

Tungsten disulfide MSDSTungsten disulfide crystal

Structure of Tungsten Disulfide Crystal

WS2-Tungsten Disulfide Crystal
The hexagonal structure of Tungsten Disulfide (WS2)

Literature and Reviews

  • Controlled Synthesis and Transfer of Large-Area WS2 Sheets: From Single Layer to Few Layers, A. Elı´as et al., ACS Nano, 7 (6), 5235–5242 (2013); DOI: 10.1021/nn400971k.
  • Extraordinary Room-Temperature Photoluminescence in Triangular WS2 Monolayers, H. R. Gutiérrez et al., Nano Lett., 13 (8), 3447–3454 (2013); DOI: 10.1021/nl3026357.
  • Controlled Growth of High-Quality Monolayer WS2 Layers on Sapphire and Imaging Its Grain Boundary, Y. Zhang et al., ACS Nano, 7 (10), 8963–8971 (2013); DOI: 10.1021/nn403454e.

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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