Cu4Dy4S8
Cu4Dy4S8 is a stable semiconducting quaternary sulfide compound composed of copper, dysprosium, and sulfur.
About Cu4Dy4S8
Cu4Dy4S8 is a quaternary sulfide compound characterized by its semiconducting electronic nature. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of copper, dysprosium, and sulfur atoms.
This material is of interest to researchers investigating complex chalcogenides for potential electronic and optoelectronic applications. Its stability and well-defined structural characteristics make it a significant subject for studies into the synthesis and properties of rare-earth copper sulfides.
Key Properties
Cross-validated computational properties for Cu4Dy4S8, 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 Cu4Dy4S8, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 1.62 | 0.0000 | -16.318 | 5.85 |
| P212121 (No. 19) | orthorhombic | 1.63 | 0.0006 | -16.317 | 5.77 |
| Pnma (No. 62) | — | — | — | — | — |
| P212121 (No. 19) | — | — | — | — | — |
| P212121 (No. 19) | — | — | — | — | — |
| P212121 (No. 19) | — | — | — | — | — |
| — | — | — | — | — | 4.86 |
Applications
Where Cu4Dy4S8 is used.
Frequently Asked Questions
Common questions about Cu4Dy4S8, answered from cross-validated data.
What is Cu4Dy4S8?
Cu4Dy4S8 is a stable semiconducting quaternary sulfide compound composed of copper, dysprosium, and sulfur.
What is Cu4Dy4S8 used for?
What is the band gap of Cu4Dy4S8?
Is Cu4Dy4S8 a metal, semiconductor, or insulator?
Is Cu4Dy4S8 thermodynamically stable?
What is the crystal structure of Cu4Dy4S8?
What is the density of Cu4Dy4S8?
How many polymorphs of Cu4Dy4S8 are known?
What elements does Cu4Dy4S8 contain?
Where does the data for Cu4Dy4S8 come from?
How It Compares
As a unique quaternary sulfide, Cu4Dy4S8 serves as a distinct example of how rare-earth elements can be integrated into copper-based chalcogenide frameworks to achieve thermodynamic stability.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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