Ag8Rb4S6
Ag8Rb4S6 is a thermodynamically stable semiconducting quaternary sulfide material.
About Ag8Rb4S6
Ag8Rb4S6 is a complex quaternary sulfide composed of silver, rubidium, and sulfur. As a thermodynamically stable material located on the convex hull, it represents a robust phase within its chemical system, offering a well-defined structural arrangement for material scientists to investigate.
This compound exhibits semiconducting electronic character, making it a subject of interest for researchers exploring new functional materials. Its unique stoichiometry and stable nature suggest potential utility in specialized electronic or optoelectronic device development where specific band structures are required.
Key Properties
Cross-validated computational properties for Ag8Rb4S6, 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 Ag8Rb4S6, 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. |
|---|---|---|---|---|---|
| C2/m (No. 12) | monoclinic | 0.19 | 0.0000 | -3.491 | 5.30 |
| No. 0 | unknown | — | — | — | 1.35 |
| C2/m (No. 12) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 0.95 |
Applications
Where Ag8Rb4S6 is used.
Frequently Asked Questions
Common questions about Ag8Rb4S6, answered from cross-validated data.
What is Ag8Rb4S6?
Ag8Rb4S6 is a thermodynamically stable semiconducting quaternary sulfide material.
What is Ag8Rb4S6 used for?
What is the band gap of Ag8Rb4S6?
Is Ag8Rb4S6 a metal, semiconductor, or insulator?
Is Ag8Rb4S6 thermodynamically stable?
What is the crystal structure of Ag8Rb4S6?
What is the density of Ag8Rb4S6?
How many polymorphs of Ag8Rb4S6 are known?
What elements does Ag8Rb4S6 contain?
Where does the data for Ag8Rb4S6 come from?
How It Compares
As a distinct quaternary sulfide, Ag8Rb4S6 occupies a unique position in materials research. Without direct structural analogs in its immediate class, it serves as a foundational example of how silver and alkali metals can integrate into stable sulfide frameworks, providing a benchmark for future discovery of similar semiconducting chalcogenides.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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