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Photonics Dictionary

tungsten diselenide

Tungsten diselenide (WSe2) is a member of the transition metal dichalcogenides (TMDs) family, composed of tungsten (W) and selenium (Se). Similar to other TMDs, tungsten diselenide possesses a layered structure, consisting of sheets of tungsten atoms sandwiched between layers of selenium atoms.

The individual layers in tungsten diselenide are held together by strong covalent bonds within each layer, while weaker van der Waals forces hold the layers together. This layered structure gives rise to unique electronic properties, including its semiconducting behavior with a direct bandgap in the monolayer form.

Tungsten diselenide exhibits interesting optical, electronic, and mechanical properties, making it a promising material for various applications. It has been investigated for use in electronics, optoelectronics, photovoltaics, and catalysis. Additionally, its flexibility and compatibility with other materials make it suitable for integration into flexible and hybrid electronic devices.

Overall, tungsten diselenide holds significant potential for advancing technology in fields such as energy harvesting, sensing, and advanced electronics, driven by its unique properties and tunability at the nanoscale level.
 

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