As2In2
Indium arsenide
Indium arsenide is a semiconductor material composed of indium and arsenic. It is primarily utilized in the fabrication of high-speed electronic devices and infrared optoelectronic components.
Overview
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.
0.57 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.
0.000 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.
On hull (stable)
3 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
42
5 databases, 18 space groups
Crystallography
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 |
| — | — | — | — | — | 6.44 |
| Cmcm (No. 63) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
| Pmmn (No. 59) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P4/nmm (No. 129) | — | — | — | — | — |
Uses
Applications
Where As2In2 is used.
Infrared detectorsHigh-speed transistorsLaser diodesPhotodetectors
Reference
Frequently Asked Questions
Common questions about As2In2, answered from cross-validated data.
What is As2In2?
Indium arsenide is a semiconductor material composed of indium and arsenic. It is primarily utilized in the fabrication of high-speed electronic devices and infrared optoelectronic components.
More questions
What is As2In2 used for?
As2In2 is used in infrared detectors, high-speed transistors, laser diodes, and photodetectors.
What is the band gap of As2In2?
As2In2 has a DFT-computed band gap of 0.57 eV across 42 reported structures.
Is As2In2 a metal, semiconductor, or insulator?
With a band gap up to 0.57 eV it is a semiconductor.
Is As2In2 thermodynamically stable?
Yes — As2In2 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of As2In2?
The lowest-energy reported polymorph of As2In2 is cubic symmetry, space group F-43m (No. 216).
What is the density of As2In2?
The computed density of the ground-state structure of As2In2 is 5.53 g/cm³.
How many polymorphs of As2In2 are known?
42 structures of As2In2 are reported across 5 databases, spanning 18 distinct space groups.
What elements does As2In2 contain?
As2In2 contains As and In (2 elements).
Where does the data for As2In2 come from?
As2In2 data is cross-referenced from materials_project, omat24, aflow, cod, nomad.
Explore
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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