As2In2
As2In2 is a thermodynamically stable binary III-V semiconductor composed of indium and arsenic.
About As2In2
As2In2 is a member of the III-V semiconductor family, characterized by its stable crystalline structure. As a material located on the convex hull, it exhibits robust thermodynamic stability, making it a reliable subject for fundamental research into binary pnictide systems. Its electronic behavior is defined by its semiconducting nature, which is a hallmark of this class of compounds.
Because of its structural integrity and predictable electronic character, As2In2 serves as an important reference point for understanding the bonding and lattice dynamics of indium-based semiconductors. It is primarily studied in academic and industrial settings to better understand phase stability and potential applications in advanced electronic devices.
Key Properties
Cross-validated computational properties for As2In2, aggregated across 5 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 As2In2, 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. |
|---|---|---|---|---|---|
| F-43m (No. 216) | cubic | 0.00 | 0.0000 | -19.032 | 5.53 |
| P63mc (No. 186) | hexagonal | 0.00 | 0.0077 | -19.024 | 5.52 |
| Pa-3 (No. 205) | cubic | 0.57 | 0.1126 | -18.919 | 5.82 |
| Fm-3m (No. 225) | cubic | 0.00 | 0.1878 | -18.844 | 6.61 |
| Cmcm (No. 63) | orthorhombic | 0.00 | 0.1985 | -18.833 | 6.52 |
| P4/nmm (No. 129) | — | — | — | — | — |
| I41/amd (No. 141) | — | — | — | — | — |
| I41/amd (No. 141) | — | — | — | — | — |
| I41/amd (No. 141) | — | — | — | — | — |
| — | — | — | — | — | 5.33 |
| Imma (No. 74) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
Applications
Where As2In2 is used.
Frequently Asked Questions
Common questions about As2In2, answered from cross-validated data.
What is As2In2?
As2In2 is a thermodynamically stable binary III-V semiconductor composed of indium and arsenic.
What is As2In2 used for?
What is the band gap of As2In2?
Is As2In2 a metal, semiconductor, or insulator?
Is As2In2 thermodynamically stable?
What is the crystal structure of As2In2?
What is the density of As2In2?
How many polymorphs of As2In2 are known?
What elements does As2In2 contain?
Where does the data for As2In2 come from?
How It Compares
Within the iii-v semiconductors class.
Within the diverse group of III-V semiconductors, As2In2 stands out for its specific stoichiometric configuration compared to more common binary compounds like InP or AlN. While many members of this class are widely utilized in commercial optoelectronics, As2In2 represents a distinct structural arrangement that provides valuable insights into the stability trends of indium-arsenic systems relative to their aluminum-based counterparts like AlAs.
Related Compounds
Other III-V Semiconductors in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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