WSe2
Tungsten diselenide · Tungsten(IV) selenide
Tungsten diselenide is a stable, semiconducting transition-metal dichalcogenide used extensively in advanced electronics and optoelectronic research.
About Tungsten diselenide
WSe2 is a layered transition-metal dichalcogenide that functions as a robust semiconductor. Its structural integrity is confirmed by its position on the convex hull, making it a thermodynamically stable material of significant interest for fundamental research and industrial development. The compound is widely utilized in the exploration of thin-film electronics and light-harvesting systems. Due to its well-defined electronic character, it serves as a foundational material for investigating quantum phenomena and high-performance electronic devices.
Key Properties
Cross-validated computational properties for Tungsten diselenide, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Applications
Where Tungsten diselenide is used.
Frequently Asked Questions
Common questions about Tungsten diselenide, answered from cross-validated data.
What is WSe2?
Tungsten diselenide is a stable, semiconducting transition-metal dichalcogenide used extensively in advanced electronics and optoelectronic research.
What is WSe2 used for?
What is the band gap of WSe2?
Is WSe2 a metal, semiconductor, or insulator?
Is WSe2 thermodynamically stable?
How many polymorphs of WSe2 are known?
What elements does WSe2 contain?
Where does the data for WSe2 come from?
How It Compares
Within the transition-metal dichalcogenides class.
Within the family of transition-metal dichalcogenides, WSe2 shares structural similarities with MoSe2 and MoS2, yet it is distinguished by its unique electronic response and heavy metal center. While materials like ReS2 or ReSe2 exhibit lower symmetry, WSe2 maintains a highly ordered lattice that facilitates consistent performance in semiconductor applications compared to more complex phases like Mo3S4.
Related Compounds
Other Transition-Metal Dichalcogenides in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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