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Tungsten Disulfide (WS2) Few-Layer Film


Product Code M2172F11
Price $475.00 ex. VAT

Tungsten disulfide few-layer film, an outstanding full solar spectrum photocatalyst

For applications in electrodes, energy storage devices and photoelectrochemical cells


Few-layer tungsten disulfide (WS2) film has a 2D-layered structure with a narrow indirect bandgap of of 1.35 eV. In contrast, the monolayer film possesses a direct bandgap of 2.1 eV.

WS2 few-layer films possess very high NIR light photocatalytic activity. They also have strong UV and visible light photocatalytic activity, making them a valuable and outstanding full solar spectrum photocatalyst.

Applications

Due to its distinctive electron configuration and high specific surface area, few-layer tungsten disulfide nanosheets have potential applications in electrodes and energy storage devices, supercapacitors, and photoelectrochemical cells as a catalyst for hydrogen evolution reactions (HERs). With tunable electromagnetic absorption, it has practical applications against electromagnetic pollution. WS2 is also a great potential candidate in photothermal therapy for the ablation of cancer cells, when NIR light is absorbed and converted into heat.

Synthesis

High-quality tungsten disulfide few-layer films were grown directly on the substrates (sapphire) via the chemical vapour deposition (CVD) method.

Usage

WS2 few-layer films can be used for research purposes such as microscopic analysis, photoluminescence, and Raman spectroscopy studies. Few-layer WS2 films can also be transferred to other substrates.

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Technical Data

CAS Number 12138-09-9
Chemical Formula WS2
Molecular Weight 247.97 g/mol
Bandgap 1.4 - 2.01 eV
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

Substrate Sapphire
Product Code M2172F11
Size 1 cm × 1 cm*
Growth Method CVD synthesis
Appearance Transparent
Purity >99%
Transparency >97%
Coverage >95%
Number of Layers 2 - 5
Sheet Resistance N/A
Transfer Method Directly grown
Substrate Thickness 300 µm

*Other sizes available: 2 cm × 2 cm or 2 inches in diameter, 4 inches in diameter custom-made sizes. Please contact us for more details.

High-quality tungsten disulfide few-layer film is available as a directly-grown film on sapphire. Different sizes and substrates of monolayer WS2 films are also available via custom order. Please contact us for more details.

  • Glass (1 cm × 1 cm, 2 cm × 2 cm or custom-made sizes)
  • Silicon (1 cm × 1 cm, 2 cm × 2 cm or custom-made sizes)
  • Quartz (1 cm × 1 cm, 2 cm × 2 cm or custom-made sizes)
  • SiO2 /Si (1 cm × 1 cm, 2 cm × 2 cm or custom-made sizes)
  • Copper (1 cm × 1 cm, 2 cm × 2 cm or custom-made sizes)

MSDS Document

Tungsten Disulfide Few-Layer Film MSDSTungsten disulfide few-layer film

Pricing Table

Product code Substrate Size Quantity (EA) Price
M2172F11 Sapphire 1 cm × 1 cm 1 £380.00

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.

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