K3Sb

tripotassium antimonide · potassium antimonide

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

KSb
Crystal structure of K3Sb
Ground-state structure · Materials Project
Overview

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.

At a glance

Key Properties

Cross-validated computational properties for tripotassium antimonide, aggregated across 4 databases.

Band Gap

0.39–0.68 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
3 DFT sources

Structures

19
4 databases, 5 space groups
Uses

Applications

Where tripotassium antimonide is used.

photocathodessemiconductor research
Reference

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.

More questions
What is K3Sb used for?
tripotassium antimonide (K3Sb) is used in photocathodes and semiconductor research.
What is the band gap of K3Sb?
tripotassium antimonide (K3Sb) has a DFT-computed band gap of 0.39–0.68 eV across 19 reported structures.
Is K3Sb a metal, semiconductor, or insulator?
With a band gap up to 0.68 eV it is a semiconductor.
Is K3Sb thermodynamically stable?
Yes — tripotassium antimonide (K3Sb) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of K3Sb are known?
19 structures of K3Sb are reported across 4 databases, spanning 5 distinct space groups.
What elements does K3Sb contain?
tripotassium antimonide (K3Sb) contains K and Sb (2 elements).
Where does the data for K3Sb come from?
K3Sb data is cross-referenced from latticegraph.
Comparison

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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