Ag2K4S8V2
Ag2K4S8V2 is a stable, semiconducting quaternary sulfide material containing silver, potassium, sulfur, and vanadium.
About Ag2K4S8V2
Ag2K4S8V2 is a complex quaternary sulfide compound composed of silver, potassium, sulfur, and vanadium. As a thermodynamically stable material situated on the convex hull, it represents a robust phase within its chemical system, offering a reliable structural foundation for solid-state research.
This material exhibits semiconducting electronic behavior, which makes it an intriguing candidate for specialized electronic and optoelectronic investigations. Its existence across multiple reported structures highlights its significance in the study of complex chalcogenide frameworks.
Key Properties
Cross-validated computational properties for Ag2K4S8V2, 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 Ag2K4S8V2, 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. |
|---|---|---|---|---|---|
| Fddd (No. 70) | orthorhombic | 1.30 | 0.0000 | -5.032 | 2.88 |
| P1 (No. 1) | triclinic | 1.28 | 0.0081 | -5.024 | 2.77 |
| Fddd (No. 70) | — | — | — | — | — |
| — | — | — | — | — | 2.01 |
Applications
Where Ag2K4S8V2 is used.
Frequently Asked Questions
Common questions about Ag2K4S8V2, answered from cross-validated data.
What is Ag2K4S8V2?
Ag2K4S8V2 is a stable, semiconducting quaternary sulfide material containing silver, potassium, sulfur, and vanadium.
What is Ag2K4S8V2 used for?
What is the band gap of Ag2K4S8V2?
Is Ag2K4S8V2 a metal, semiconductor, or insulator?
Is Ag2K4S8V2 thermodynamically stable?
What is the crystal structure of Ag2K4S8V2?
What is the density of Ag2K4S8V2?
How many polymorphs of Ag2K4S8V2 are known?
What elements does Ag2K4S8V2 contain?
Where does the data for Ag2K4S8V2 come from?
How It Compares
As a unique quaternary compound, Ag2K4S8V2 serves as a distinct example of how silver and vanadium can be integrated into a potassium-sulfur framework to achieve thermodynamic stability. It represents a specialized niche in materials science where the interplay of these specific elements facilitates a stable semiconducting state.
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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