As8P8S28
As8P8S28 is a stable semiconducting material composed of arsenic, phosphorus, and sulfur that is currently being studied for its complex structural properties.
About As8P8S28
As8P8S28 is a complex multicomponent chalcogenide that exhibits semiconducting electronic behavior. Its status as a thermodynamically stable phase on the convex hull suggests a robust structural arrangement that resists decomposition under standard conditions. This stability makes it a compelling subject for researchers investigating the fundamental physics of phosphorus-arsenic-sulfur systems. The material is characterized by a high degree of structural diversity, as evidenced by multiple reported configurations across various crystallographic databases. These findings highlight the intricate bonding environment within the lattice, which is essential for understanding how such compounds can be tuned for specific electronic or optical responses in solid-state applications.
Key Properties
Cross-validated computational properties for As8P8S28, aggregated across 4 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 As8P8S28, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 2.68 | 0.0000 | -9.660 | 2.45 |
| — | — | — | — | — | 2.16 |
| No. 0 | unknown | — | — | — | 0.66 |
| P21/c (No. 14) | — | — | — | — | — |
Applications
Where As8P8S28 is used.
Frequently Asked Questions
Common questions about As8P8S28, answered from cross-validated data.
What is As8P8S28?
As8P8S28 is a stable semiconducting material composed of arsenic, phosphorus, and sulfur that is currently being studied for its complex structural properties.
What is As8P8S28 used for?
What is the band gap of As8P8S28?
Is As8P8S28 a metal, semiconductor, or insulator?
Is As8P8S28 thermodynamically stable?
What is the crystal structure of As8P8S28?
What is the density of As8P8S28?
How many polymorphs of As8P8S28 are known?
What elements does As8P8S28 contain?
Where does the data for As8P8S28 come from?
How It Compares
As a unique multicomponent chalcogenide, As8P8S28 occupies a specialized niche within the landscape of semiconductor materials. While many binary or ternary sulfides are well-documented, this complex quaternary-like arrangement represents a sophisticated structural architecture that demonstrates the potential for high-order stability in chalcogen-rich systems.
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).
- 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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