K3As
Potassium arsenide is a binary inorganic compound composed of potassium and arsenic. It is primarily utilized in specialized research settings as a precursor for the synthesis of more complex semiconductor materials and arsenic-containing compounds.
Key Properties
Cross-validated computational properties for K3As, 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.
Reported Structures
Lowest-energy structures reported for K3As, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P63/mmc (No. 194) | hexagonal | 0.11 | 0.0000 | -2.319 | 2.15 |
| Pm-3m (No. 221) | — | — | — | — | — |
| C2 (No. 5) | Monoclinic | — | — | — | 1.60 |
| P63/mmc (No. 194) | — | — | — | — | — |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 2.07 |
| C2 (No. 5) | Monoclinic | — | — | — | 1.80 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 2.13 |
| C2 (No. 5) | Monoclinic | — | — | — | 1.44 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 2.10 |
Applications
Where K3As is used.
Frequently Asked Questions
Common questions about K3As, answered from cross-validated data.
What is K3As?
Potassium arsenide is a binary inorganic compound composed of potassium and arsenic. It is primarily utilized in specialized research settings as a precursor for the synthesis of more complex semiconductor materials and arsenic-containing compounds.
What is K3As used for?
What is the band gap of K3As?
Is K3As a metal, semiconductor, or insulator?
Is K3As thermodynamically stable?
What is the crystal structure of K3As?
What is the density of K3As?
How many polymorphs of K3As are known?
What elements does K3As contain?
Where does the data for K3As come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
Analyze K3As in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →