Ga8K8Te16
Ga8K8Te16 is a thermodynamically stable semiconducting compound consisting of gallium, potassium, and tellurium.
About Ga8K8Te16
Ga8K8Te16 is a complex ternary compound composed of gallium, potassium, and tellurium. As a thermodynamically stable phase located on the convex hull, it exhibits a robust structural framework that is well-documented across multiple crystallographic databases.
This material functions as a semiconductor, making it a subject of interest for researchers exploring electronic and thermoelectric properties. Its stability and distinct elemental composition provide a unique platform for investigating the interplay between heavy chalcogenide networks and alkali metal cations.
Key Properties
Cross-validated computational properties for Ga8K8Te16, 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 Ga8K8Te16, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 1.53 | 0.0000 | -3.515 | 4.18 |
| I-42d (No. 122) | tetragonal | 1.39 | 0.0256 | -3.489 | 3.96 |
| C2/c (No. 15) | — | — | — | — | — |
| — | — | — | — | — | 3.98 |
Applications
Where Ga8K8Te16 is used.
Frequently Asked Questions
Common questions about Ga8K8Te16, answered from cross-validated data.
What is Ga8K8Te16?
Ga8K8Te16 is a thermodynamically stable semiconducting compound consisting of gallium, potassium, and tellurium.
What is Ga8K8Te16 used for?
What is the band gap of Ga8K8Te16?
Is Ga8K8Te16 a metal, semiconductor, or insulator?
Is Ga8K8Te16 thermodynamically stable?
What is the crystal structure of Ga8K8Te16?
What is the density of Ga8K8Te16?
How many polymorphs of Ga8K8Te16 are known?
What elements does Ga8K8Te16 contain?
Where does the data for Ga8K8Te16 come from?
How It Compares
As a thermodynamically stable ternary chalcogenide, Ga8K8Te16 serves as a foundational example of complex gallium-based frameworks. It represents a stable point in the compositional space of these elements, providing a benchmark for understanding how alkali metal integration influences the electronic behavior of telluride-based semiconductor systems.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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