As4Cs4Se18Sn2
As4Cs4Se18Sn2 is a thermodynamically stable semiconducting material composed of arsenic, cesium, selenium, and tin, utilized in advanced materials research.
About As4Cs4Se18Sn2
As4Cs4Se18Sn2 is a complex semiconducting compound that occupies a stable position on the convex hull. Its unique structural arrangement of arsenic, cesium, selenium, and tin makes it a subject of interest for researchers investigating new pathways in solid-state chemistry and electronic materials.
This material is primarily studied for its potential utility in advanced photovoltaic and optoelectronic applications. By leveraging its stable electronic character, scientists aim to explore how such multi-element frameworks can contribute to the development of next-generation energy conversion technologies.
Key Properties
Cross-validated computational properties for As4Cs4Se18Sn2, 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 As4Cs4Se18Sn2, 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 | 0.77 | 0.0000 | -4.075 | 4.23 |
| No. 0 | unknown | — | — | — | 2.38 |
| P21 (No. 4) | — | — | — | — | — |
Applications
Where As4Cs4Se18Sn2 is used.
Frequently Asked Questions
Common questions about As4Cs4Se18Sn2, answered from cross-validated data.
What is As4Cs4Se18Sn2?
As4Cs4Se18Sn2 is a thermodynamically stable semiconducting material composed of arsenic, cesium, selenium, and tin, utilized in advanced materials research.
What is As4Cs4Se18Sn2 used for?
What is the band gap of As4Cs4Se18Sn2?
Is As4Cs4Se18Sn2 a metal, semiconductor, or insulator?
Is As4Cs4Se18Sn2 thermodynamically stable?
What is the crystal structure of As4Cs4Se18Sn2?
What is the density of As4Cs4Se18Sn2?
How many polymorphs of As4Cs4Se18Sn2 are known?
What elements does As4Cs4Se18Sn2 contain?
Where does the data for As4Cs4Se18Sn2 come from?
How It Compares
Within the halide perovskite photovoltaics class.
Within the broad landscape of halide-related photovoltaics, As4Cs4Se18Sn2 distinguishes itself through its complex chalcogenide composition compared to simpler, more traditional perovskite structures like CsPbBr3 or CsSnI3. While many of its class members rely on standard halide frameworks, this compound utilizes a more intricate anionic network, positioning it as a specialized alternative for exploring non-traditional semiconductor architectures.
Related Compounds
Other Halide Perovskite Photovoltaics in the database.
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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