K8O40Sb8Si8
K8O40Sb8Si8 is a thermodynamically stable semiconducting compound composed of potassium, oxygen, antimony, and silicon.
About K8O40Sb8Si8
K8O40Sb8Si8 is a complex inorganic compound characterized by its semiconducting electronic nature. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of potassium, oxygen, antimony, and silicon atoms.
This material is of significant interest for researchers investigating multi-element frameworks. Its stability suggests potential for integration into specialized electronic or optoelectronic device architectures where precise control over semiconducting behavior is required.
Key Properties
Cross-validated computational properties for K8O40Sb8Si8, 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 K8O40Sb8Si8, 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. |
|---|---|---|---|---|---|
| Pna21 (No. 33) | orthorhombic | 2.81 | 0.0000 | -6.966 | 3.82 |
| — | — | — | — | — | 3.82 |
| — | — | — | — | — | 2.93 |
| Pna21 (No. 33) | — | — | — | — | — |
| — | — | — | — | — | 2.49 |
Applications
Where K8O40Sb8Si8 is used.
Frequently Asked Questions
Common questions about K8O40Sb8Si8, answered from cross-validated data.
What is K8O40Sb8Si8?
K8O40Sb8Si8 is a thermodynamically stable semiconducting compound composed of potassium, oxygen, antimony, and silicon.
What is K8O40Sb8Si8 used for?
What is the band gap of K8O40Sb8Si8?
Is K8O40Sb8Si8 a metal, semiconductor, or insulator?
Is K8O40Sb8Si8 thermodynamically stable?
What is the crystal structure of K8O40Sb8Si8?
What is the density of K8O40Sb8Si8?
How many polymorphs of K8O40Sb8Si8 are known?
What elements does K8O40Sb8Si8 contain?
Where does the data for K8O40Sb8Si8 come from?
How It Compares
As a unique multi-component system, K8O40Sb8Si8 stands as a distinct structural entity within the landscape of complex potassium-antimony-silicates. It serves as a foundational example of how these elements can organize into a stable, semiconducting configuration, providing a benchmark for future studies into similar quaternary oxide frameworks.
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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