K8S12Te4
K8S12Te4 is a thermodynamically stable semiconducting compound composed of potassium, sulfur, and tellurium.
About K8S12Te4
K8S12Te4 is a complex chalcogenide compound characterized by its semiconducting electronic nature. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural arrangement of potassium, sulfur, and tellurium atoms.
Its stability and electronic properties make it a subject of interest for researchers investigating multi-element semiconductors. The material is documented across multiple structural databases, reflecting its significance in the study of complex inorganic frameworks.
Key Properties
Cross-validated computational properties for K8S12Te4, aggregated across 4 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 K8S12Te4, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 2.34 | 0.0000 | -11.135 | 2.58 |
| P21/c (No. 14) | — | — | — | — | — |
| — | — | — | — | — | 1.95 |
| No. 0 | unknown | — | — | — | 0.66 |
Applications
Where K8S12Te4 is used.
Frequently Asked Questions
Common questions about K8S12Te4, answered from cross-validated data.
What is K8S12Te4?
K8S12Te4 is a thermodynamically stable semiconducting compound composed of potassium, sulfur, and tellurium.
What is K8S12Te4 used for?
What is the band gap of K8S12Te4?
Is K8S12Te4 a metal, semiconductor, or insulator?
Is K8S12Te4 thermodynamically stable?
What is the crystal structure of K8S12Te4?
What is the density of K8S12Te4?
How many polymorphs of K8S12Te4 are known?
What elements does K8S12Te4 contain?
Where does the data for K8S12Te4 come from?
How It Compares
As a unique member of the potassium-sulfur-tellurium system, K8S12Te4 occupies a distinct position due to its thermodynamic stability and specific stoichiometry. It serves as a reference point for understanding how the integration of heavy chalcogens like tellurium into sulfur-rich lattices influences the electronic behavior of these complex semiconductors.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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