AlSb
Aluminium antimonide · Aluminum antimonide
Aluminium antimonide is a stable III-V semiconductor material primarily utilized in the development of optoelectronic and high-frequency electronic devices.
About Aluminium antimonide
Aluminium antimonide is a thermodynamically stable member of the III-V semiconductor family. Its electronic structure makes it a valuable candidate for specialized optoelectronic applications where specific band characteristics are required for efficient light interaction. The material is highly regarded in research for its potential in high-frequency device architectures and infrared technology. Given its position on the convex hull, it exhibits robust structural integrity, which is essential for consistent performance in semiconductor manufacturing. The extensive structural data available for this compound highlights its significance as a well-characterized material in modern solid-state physics.
Key Properties
Cross-validated computational properties for Aluminium antimonide, aggregated across 6 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of AlSb. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for AlSb, 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 | 1.23 | 0.0000 | -16.472 | 4.18 |
| P63mc (No. 186) | hexagonal | 0.92 | 0.0089 | -16.463 | 4.18 |
| Pa-3 (No. 205) | cubic | 0.78 | 0.1170 | -16.355 | 4.48 |
| Cmcm (No. 63) | orthorhombic | 0.00 | 0.1878 | -16.284 | 5.13 |
| I-4m2 (No. 119) | tetragonal | 0.00 | 0.2386 | -16.234 | 5.23 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 5.22 |
| No. 0 | unknown | — | — | — | 1.07 |
| C2/m (No. 12) | Monoclinic | — | — | — | 2.49 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.07 |
| — | — | — | — | — | 5.38 |
| P-1 (No. 2) | Triclinic | — | — | — | 5.35 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.98 |
Applications
Where Aluminium antimonide is used.
Frequently Asked Questions
Common questions about Aluminium antimonide, answered from cross-validated data.
What is AlSb?
Aluminium antimonide is a stable III-V semiconductor material primarily utilized in the development of optoelectronic and high-frequency electronic devices.
What is AlSb used for?
What is the band gap of AlSb?
Is AlSb a metal, semiconductor, or insulator?
Is AlSb thermodynamically stable?
What is the crystal structure of AlSb?
What is the density of AlSb?
How many polymorphs of AlSb are known?
What elements does AlSb contain?
Where does the data for AlSb come from?
How It Compares
Within the iii-v semiconductors class.
Within the III-V semiconductor class, AlSb serves as a strategic counterpart to materials like AlAs and GaP. While many of its siblings are heavily utilized in visible-light LEDs, AlSb is distinct for its specific electronic properties that favor infrared-based applications. Compared to the nitride-based members of the group like GaN or InN, AlSb offers a different lattice constant and electronic profile, providing engineers with a versatile alternative for heterostructure design and lattice-matched device fabrication.
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).
- mpaloe — Data from mpaloe.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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