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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.
High Purity
>99% Tungsten Disulfide Purity
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Low Cost
Low Cost Tungsten Disulfide
Visible light photocatalytic activity
Strong UV and visible light photocatalytic activity
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: up to 2 cm × 2 cm or 2 inches in diameter.
High-quality tungsten disulfide (WS2) few-layer films are available on Sapphire as standard. Different substrates of few-layer WS2 films, including SiO2/Si, Glass, Silicon and Quartz are also available via custom order.
Please contact us for more information regarding custom products.
MSDS Document
Tungsten disulfide few-layer film
Pricing Table
| Product code | Substrate | Size | Quantity (EA) | Price |
| M2172F11 | Sapphire | 1 cm × 1 cm | 1 | £420 |
Related Products
We stock a wide range of 2D materials as powders, crystals and solutions. Please contact us if you cannot find what you are looking for.
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To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.