K2Se5
K2Se5 is a semiconducting potassium selenide compound that exists as a metastable phase in inorganic chemistry.
About K2Se5
K2Se5 is a complex potassium selenide characterized by its semiconducting electronic nature. As a material that resides above the thermodynamic hull, it represents a metastable phase that offers unique insights into the structural diversity of alkali metal chalcogenides.
Its existence across multiple reported structures highlights the structural flexibility inherent in selenium-rich systems. This compound serves as a valuable subject for fundamental studies in solid-state chemistry, particularly regarding the synthesis of non-equilibrium phases in complex inorganic frameworks.
Key Properties
Cross-validated computational properties for K2Se5, 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 K2Se5 is used.
Frequently Asked Questions
Common questions about K2Se5, answered from cross-validated data.
What is K2Se5?
K2Se5 is a semiconducting potassium selenide compound that exists as a metastable phase in inorganic chemistry.
What is K2Se5 used for?
What is the band gap of K2Se5?
Is K2Se5 a metal, semiconductor, or insulator?
Is K2Se5 thermodynamically stable?
How many polymorphs of K2Se5 are known?
What elements does K2Se5 contain?
Where does the data for K2Se5 come from?
How It Compares
As a member of the alkali metal selenide family, K2Se5 occupies a specialized niche where its metastability distinguishes it from more common, highly stable binary phases. It serves as an example of the complex structural landscape found in higher-order chalcogenides, where the arrangement of selenium chains dictates its electronic properties.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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