As18Pb14S40
As18Pb14S40 is a metastable semiconducting material composed of arsenic, lead, and sulfur that is investigated for its role in thermoelectric research.
About As18Pb14S40
As18Pb14S40 is a complex semiconducting compound within the lead chalcogenide family. Its composition, involving arsenic, lead, and sulfur, positions it as an intriguing subject for research into advanced thermoelectric materials where structural complexity often influences transport properties.
As a metastable phase, this material represents a distinct configuration of lead-based chalcogenides. It is studied for its potential to offer unique electronic behaviors that differ from simpler binary systems, contributing to the broader understanding of how multi-element frameworks can be tuned for energy conversion applications.
Key Properties
Cross-validated computational properties for As18Pb14S40, 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 As18Pb14S40, 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 (No. 4) | monoclinic | 0.14 | 0.0288 | -4.721 | 5.03 |
| P21 (No. 4) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 2.67 |
Applications
Where As18Pb14S40 is used.
Frequently Asked Questions
Common questions about As18Pb14S40, answered from cross-validated data.
What is As18Pb14S40?
As18Pb14S40 is a metastable semiconducting material composed of arsenic, lead, and sulfur that is investigated for its role in thermoelectric research.
What is As18Pb14S40 used for?
What is the band gap of As18Pb14S40?
Is As18Pb14S40 a metal, semiconductor, or insulator?
Is As18Pb14S40 thermodynamically stable?
What is the crystal structure of As18Pb14S40?
What is the density of As18Pb14S40?
How many polymorphs of As18Pb14S40 are known?
What elements does As18Pb14S40 contain?
Where does the data for As18Pb14S40 come from?
How It Compares
Within the lead chalcogenide thermoelectrics class.
Unlike the prototypical and highly stable binary compounds such as PbS or PbSe, which are widely recognized for their simple rock-salt structures and robust thermoelectric performance, As18Pb14S40 exhibits a much more intricate and metastable structural arrangement that highlights the diversity of the lead chalcogenide class.
Related Compounds
Other Lead Chalcogenide Thermoelectrics in the database.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
Analyze As18Pb14S40 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →