Al4Cd2Se8
Al4Cd2Se8 is a stable, semiconducting ternary selenide used in materials science research.
About Al4Cd2Se8
Al4Cd2Se8 is a complex ternary selenide that exhibits semiconducting electronic behavior. As a thermodynamically stable compound residing on the convex hull, it represents a robust structural configuration within its chemical system.
Its unique arrangement of aluminum, cadmium, and selenium atoms makes it a subject of interest for researchers investigating new semiconducting materials. The stability of this compound suggests potential for reliable performance in specialized solid-state device applications.
Key Properties
Cross-validated computational properties for Al4Cd2Se8, 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 Al4Cd2Se8, 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. |
|---|---|---|---|---|---|
| I-4 (No. 82) | tetragonal | 2.00 | 0.0000 | -4.280 | 4.39 |
| Fd-3m (No. 227) | cubic | 1.26 | 0.0460 | -4.234 | 5.02 |
| — | — | — | — | — | 3.41 |
| — | — | — | — | — | 3.31 |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
| Fd-3m (No. 227) | — | — | — | — | — |
Applications
Where Al4Cd2Se8 is used.
Frequently Asked Questions
Common questions about Al4Cd2Se8, answered from cross-validated data.
What is Al4Cd2Se8?
Al4Cd2Se8 is a stable, semiconducting ternary selenide used in materials science research.
What is Al4Cd2Se8 used for?
What is the band gap of Al4Cd2Se8?
Is Al4Cd2Se8 a metal, semiconductor, or insulator?
Is Al4Cd2Se8 thermodynamically stable?
What is the crystal structure of Al4Cd2Se8?
What is the density of Al4Cd2Se8?
How many polymorphs of Al4Cd2Se8 are known?
What elements does Al4Cd2Se8 contain?
Where does the data for Al4Cd2Se8 come from?
How It Compares
As a distinct ternary selenide, Al4Cd2Se8 serves as a foundational example of complex chalcogenide chemistry. Within its class of related aluminum-cadmium-selenium compounds, it stands out for its thermodynamic stability, providing a reliable baseline for exploring the electronic properties of similar multinary semiconductor 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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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