Ag1Al1Te2
Silver aluminum ditelluride is a ternary semiconductor material belonging to the chalcogenide family. It is primarily studied for its potential utility in optoelectronic devices and advanced materials research.
Overview
Key Properties
Cross-validated computational properties for Ag1Al1Te2, aggregated across 2 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.
1.05 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)
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
27
2 databases, 18 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for Ag1Al1Te2, 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. |
|---|---|---|---|---|---|
| I-42d (No. 122) | tetragonal | 1.05 | 0.0000 | -20.170 | 5.29 |
| R-3m (No. 166) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Cmm2 (No. 35) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
Uses
Applications
Where Ag1Al1Te2 is used.
Semiconductor researchOptoelectronic component developmentMaterials science studies
Reference
Frequently Asked Questions
Common questions about Ag1Al1Te2, answered from cross-validated data.
What is Ag1Al1Te2?
Silver aluminum ditelluride is a ternary semiconductor material belonging to the chalcogenide family. It is primarily studied for its potential utility in optoelectronic devices and advanced materials research.
More questions
What is Ag1Al1Te2 used for?
Ag1Al1Te2 is used in semiconductor research, optoelectronic component development, and materials science studies.
What is the band gap of Ag1Al1Te2?
Ag1Al1Te2 has a DFT-computed band gap of 1.05 eV across 27 reported structures.
Is Ag1Al1Te2 a metal, semiconductor, or insulator?
With a band gap up to 1.05 eV it is a semiconductor.
Is Ag1Al1Te2 thermodynamically stable?
Yes — Ag1Al1Te2 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of Ag1Al1Te2?
The lowest-energy reported polymorph of Ag1Al1Te2 is tetragonal symmetry, space group I-42d (No. 122).
What is the density of Ag1Al1Te2?
The computed density of the ground-state structure of Ag1Al1Te2 is 5.29 g/cm³.
How many polymorphs of Ag1Al1Te2 are known?
27 structures of Ag1Al1Te2 are reported across 2 databases, spanning 18 distinct space groups.
What elements does Ag1Al1Te2 contain?
Ag1Al1Te2 contains Ag, Al, and Te (3 elements).
Where does the data for Ag1Al1Te2 come from?
Ag1Al1Te2 data is cross-referenced from materials_project, aflow.
Explore
Related Compounds
Other Phase-Change Memory Materials 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).
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