Ag28As4S24
Ag28As4S24 is a semiconducting silver arsenic sulfide compound that is theoretically predicted to be stable enough for laboratory synthesis.

About Ag28As4S24
Ag28As4S24 is a complex semiconducting quaternary chalcogenide composed of silver, arsenic, and sulfur. Its electronic structure and composition place it within a specialized group of materials often investigated for their unique transport properties and structural versatility.
As a near-hull compound, it is considered a promising candidate for experimental synthesis. Its existence across multiple structural databases highlights its significance as a stable or metastable phase within the silver-arsenic-sulfur ternary system, providing a platform for exploring advanced semiconductor physics.
Key Properties
Cross-validated computational properties for Ag28As4S24, 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 Ag28As4S24 is used.
Frequently Asked Questions
Common questions about Ag28As4S24, answered from cross-validated data.
What is Ag28As4S24?
Ag28As4S24 is a semiconducting silver arsenic sulfide compound that is theoretically predicted to be stable enough for laboratory synthesis.
What is Ag28As4S24 used for?
What is the band gap of Ag28As4S24?
Is Ag28As4S24 a metal, semiconductor, or insulator?
Is Ag28As4S24 thermodynamically stable?
How many polymorphs of Ag28As4S24 are known?
What elements does Ag28As4S24 contain?
Where does the data for Ag28As4S24 come from?
How It Compares
As a distinct member of the silver arsenic sulfide family, Ag28As4S24 represents a unique stoichiometry that differentiates it from simpler binary or ternary chalcogenides. It occupies a specific niche in the phase space, serving as an important reference point for understanding how silver and arsenic coordination environments influence the semiconducting behavior of complex sulfide frameworks.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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