Au2K2S2
Au2K2S2 is a stable semiconducting ternary sulfide containing gold, potassium, and sulfur.
About Au2K2S2
Au2K2S2 is a ternary sulfide compound composed of gold, potassium, and sulfur. As a thermodynamically stable material located on the convex hull, it represents a well-defined phase within its chemical system, supported by multiple structural entries across research databases.
The compound exhibits semiconducting electronic behavior, making it an interesting candidate for investigation in fundamental solid-state physics. Its unique composition of noble metal and alkali metal components suggests distinct coordination environments that are critical for understanding its electronic properties.
Key Properties
Cross-validated computational properties for Au2K2S2, 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.
Applications
Where Au2K2S2 is used.
Frequently Asked Questions
Common questions about Au2K2S2, answered from cross-validated data.
What is Au2K2S2?
Au2K2S2 is a stable semiconducting ternary sulfide containing gold, potassium, and sulfur.
What is Au2K2S2 used for?
What is the band gap of Au2K2S2?
Is Au2K2S2 a metal, semiconductor, or insulator?
Is Au2K2S2 thermodynamically stable?
How many polymorphs of Au2K2S2 are known?
What elements does Au2K2S2 contain?
Where does the data for Au2K2S2 come from?
How It Compares
As a distinct ternary sulfide, Au2K2S2 serves as a foundational example of gold-based chalcogenide chemistry. Within the broader landscape of complex sulfides, it stands out for its thermodynamic stability, providing a reliable reference point for researchers exploring the electronic and structural diversity of metal-sulfur frameworks.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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