Al2I14Te2
Al2I14Te2 is a thermodynamically stable, semiconducting inorganic compound composed of aluminum, iodine, and tellurium.
About Al2I14Te2
Al2I14Te2 is a complex inorganic compound composed of aluminum, iodine, and tellurium. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural arrangement that is of significant interest for fundamental materials research.
Exhibiting semiconducting electronic character, this material occupies a specialized niche in solid-state chemistry. Its existence across multiple structural databases underscores its importance as a subject for experimental and theoretical investigation into complex chalcogenide-halide systems.
Key Properties
Cross-validated computational properties for Al2I14Te2, 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 Al2I14Te2, 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. |
|---|---|---|---|---|---|
| Pc (No. 7) | monoclinic | 1.88 | 0.0000 | -2.631 | 3.96 |
| — | — | — | — | — | 3.13 |
| Pc (No. 7) | — | — | — | — | — |
| — | — | — | — | — | 3.69 |
Applications
Where Al2I14Te2 is used.
Frequently Asked Questions
Common questions about Al2I14Te2, answered from cross-validated data.
What is Al2I14Te2?
Al2I14Te2 is a thermodynamically stable, semiconducting inorganic compound composed of aluminum, iodine, and tellurium.
What is Al2I14Te2 used for?
What is the band gap of Al2I14Te2?
Is Al2I14Te2 a metal, semiconductor, or insulator?
Is Al2I14Te2 thermodynamically stable?
What is the crystal structure of Al2I14Te2?
What is the density of Al2I14Te2?
How many polymorphs of Al2I14Te2 are known?
What elements does Al2I14Te2 contain?
Where does the data for Al2I14Te2 come from?
How It Compares
As a unique compound within its structural class, Al2I14Te2 serves as a foundational example of how aluminum, iodine, and tellurium can integrate into a stable, semiconducting lattice. It provides a critical benchmark for understanding the electronic behavior of multi-element systems that do not follow traditional binary or ternary stoichiometry.
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).
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