Ge3As4
This compound is a semiconductor material composed of germanium and arsenic. It is primarily studied for its electronic properties and potential utility in specialized semiconductor device fabrication.
AsGe
Overview
Key Properties
Cross-validated computational properties for Ge3As4, 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.
0.16 eV
Range across DFT structures
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.
0.054 eV/atom
Best (lowest) across sources
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.
Metastable
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
8
3 databases, 3 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for Ge3As4, 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. |
|---|---|---|---|---|---|
| P-43m (No. 215) | cubic | 0.16 | 0.0545 | -14.356 | 5.27 |
| P-43m (No. 215) | — | — | — | — | — |
| Pmmm (No. 47) | Orthorhombic | — | — | — | 5.46 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.66 |
| P-43m (No. 215) | Cubic | — | — | — | 5.38 |
| P-43m (No. 215) | Cubic | — | — | — | 5.30 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.33 |
| P-43m (No. 215) | Cubic | — | — | — | 5.13 |
Uses
Applications
Where Ge3As4 is used.
Semiconductor researchElectronic component developmentMaterials science studies
Reference
Frequently Asked Questions
Common questions about Ge3As4, answered from cross-validated data.
What is Ge3As4?
This compound is a semiconductor material composed of germanium and arsenic. It is primarily studied for its electronic properties and potential utility in specialized semiconductor device fabrication.
More questions
What is Ge3As4 used for?
Ge3As4 is used in semiconductor research, electronic component development, and materials science studies.
What is the band gap of Ge3As4?
Ge3As4 has a DFT-computed band gap of 0.16 eV across 8 reported structures.
Is Ge3As4 a metal, semiconductor, or insulator?
With a band gap up to 0.16 eV it is a semiconductor.
Is Ge3As4 thermodynamically stable?
Ge3As4 has a lowest energy above hull of 0.054 eV/atom (metastable).
What is the crystal structure of Ge3As4?
The lowest-energy reported polymorph of Ge3As4 is cubic symmetry, space group P-43m (No. 215).
What is the density of Ge3As4?
The computed density of the ground-state structure of Ge3As4 is 5.27 g/cm³.
How many polymorphs of Ge3As4 are known?
8 structures of Ge3As4 are reported across 3 databases, spanning 3 distinct space groups.
What elements does Ge3As4 contain?
Ge3As4 contains As and Ge (2 elements).
Where does the data for Ge3As4 come from?
Ge3As4 data is cross-referenced from materials_project, jarvis, mpaloe.
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.
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