Cu2Ge2La6S14
Cu2Ge2La6S14 is a thermodynamically stable semiconducting quaternary sulfide composed of copper, germanium, lanthanum, and sulfur.
About Cu2Ge2La6S14
Cu2Ge2La6S14 is a complex quaternary sulfide characterized by its semiconducting electronic nature. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of copper, germanium, lanthanum, and sulfur atoms.
This material is of significant interest in solid-state chemistry due to its structural complexity and stability. Its electronic properties suggest potential utility in specialized optoelectronic or sensing applications where stable, narrow-to-moderate gap semiconductors are required.
Key Properties
Cross-validated computational properties for Cu2Ge2La6S14, 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 Cu2Ge2La6S14, 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. |
|---|---|---|---|---|---|
| P63 (No. 173) | hexagonal | 1.80 | 0.0000 | -6.225 | 4.69 |
| — | — | — | — | — | 3.71 |
| P63 (No. 173) | — | — | — | — | — |
| P63 (No. 173) | — | — | — | — | — |
Applications
Where Cu2Ge2La6S14 is used.
Frequently Asked Questions
Common questions about Cu2Ge2La6S14, answered from cross-validated data.
What is Cu2Ge2La6S14?
Cu2Ge2La6S14 is a thermodynamically stable semiconducting quaternary sulfide composed of copper, germanium, lanthanum, and sulfur.
What is Cu2Ge2La6S14 used for?
What is the band gap of Cu2Ge2La6S14?
Is Cu2Ge2La6S14 a metal, semiconductor, or insulator?
Is Cu2Ge2La6S14 thermodynamically stable?
What is the crystal structure of Cu2Ge2La6S14?
What is the density of Cu2Ge2La6S14?
How many polymorphs of Cu2Ge2La6S14 are known?
What elements does Cu2Ge2La6S14 contain?
Where does the data for Cu2Ge2La6S14 come from?
How It Compares
As a quaternary sulfide, Cu2Ge2La6S14 occupies a unique position within the broader landscape of complex chalcogenides. While many similar multinary sulfides are metastable, this compound is notable for its thermodynamic stability, which facilitates its reliable synthesis and characterization across multiple structural studies.
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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