Tungsten Diselenide Powder
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Tungsten Diselenide Powder
| Product |
Tungsten Diselenide |
| CAS No. | 12067-46-8 |
| Appearance | Gray  |
| Purity | 99% |
| APS | 1-5µM (Can be customized) |
| Ingredient | WSe2 |
| Product Code | NCZ-NSC676/20 |
| Molecular Weight | 341.76 g/mol |
| Density | 9.32 g/cm³ |
| Melting Point | >1,200ºC (>2,192°F) |
Tungsten Diselenide Description
Tungsten diselenide is an inorganic compound with the formula WSe2. The compound adopts a hexagonal crystalline structure similar to molybdenum disulfide. Every tungsten atom is covalently bonded to six selenium ligands in a trigonal prismatic coordination sphere while each selenium is bonded to three tungsten atoms in a pyramidal geometry.
The tungsten–selenium bond has a length of 0.2526 nm, and the distance between selenium atoms is 0.334 nm. Layers stack together via van der Waals interactions. WSe2 is a very stable semiconductor in the group-VI transition metal dichalcogenides.
The hexagonal (P63/mmc) polymorph 2H-WSe2 is isotypic with hexagonal MoS2. The two-dimensional lattice structure has W and Se arranged periodically in layers with hexagonal symmetry. Similar to graphite, van der Waals interactions hold the layers together, however the 2D-layers in WSe2 are not atomically thin.
The large size of the W cation renders the lattice structure of WSe2 more sensitive to changes than MoS2. In addition to the typical semiconducting hexagonal structure, WSe2 exists in another polymorph, a metallic octahedral coordination phase 1T-WSe2 based on a tetragonal symmetry with one WSe2 layer per repeating unit. The 1T-WSe2 phase is less stable and transitions to the 2H-WSe2 phase.WSe2 can form a fullerene-like structure.
Related Information
Storage Conditions:
Airtight sealed, avoid light and keep dry at room temperature. Â
Please contact us for customization and price inquiry
Email: contact@nanochemazone.com
Note: We supply different size ranges of Nano and micron as per the client’s requirements and also accept customization in various parameters.
Note: For pricing & ordering information, please contact us at sales@nanochemazone.com
Please contact us for quotes on Larger Quantities & Customization. E-mail: contact@nanochemazone.com
Customization:
If you are planning to order large quantities for your industrial and academic needs, please note that customization of parameters (such as size, length, purity, functionalities, etc.) are available upon request.
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