K3Sb
tripotassium antimonide · potassium antimonide
K3Sb is a stable semiconducting intermetallic compound formed from potassium and antimony used in specialized electronic research.

About tripotassium antimonide
K3Sb is a stable binary intermetallic compound composed of potassium and antimony. It is recognized for its semiconducting electronic character, which makes it a subject of interest in materials science research. The material is well-documented, with numerous reported structural variations across multiple databases, reflecting its significant role in fundamental studies.
Its thermodynamic stability on the convex hull ensures that it remains a robust candidate for specialized electronic and optoelectronic applications. By leveraging the unique interaction between the alkali metal and the pnictogen, this compound provides a distinct electronic profile suitable for high-performance device development.
Key Properties
Cross-validated computational properties for tripotassium antimonide, aggregated across 4 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 tripotassium antimonide is used.
Frequently Asked Questions
Common questions about tripotassium antimonide, answered from cross-validated data.
What is K3Sb?
K3Sb is a stable semiconducting intermetallic compound formed from potassium and antimony used in specialized electronic research.
What is K3Sb used for?
What is the band gap of K3Sb?
Is K3Sb a metal, semiconductor, or insulator?
Is K3Sb thermodynamically stable?
How many polymorphs of K3Sb are known?
What elements does K3Sb contain?
Where does the data for K3Sb come from?
How It Compares
As a stable binary semiconductor, K3Sb occupies a unique niche in the landscape of alkali-pnictide materials, serving as a foundational example of how these elements combine to form electronically active, thermodynamically favored structures.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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