Cu2GeS3
Copper germanium sulfide
This compound is a quaternary chalcogenide semiconductor material that has garnered significant interest for its potential in optoelectronic devices. It is primarily investigated for its role as an earth-abundant absorber layer in thin-film solar cells.
Key Properties
Cross-validated computational properties for Cu2GeS3, aggregated across 4 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 Cu2GeS3, 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. |
|---|---|---|---|---|---|
| Cc (No. 9) | monoclinic | 0.11 | 0.0000 | -4.779 | 4.49 |
| Imm2 (No. 44) | orthorhombic | 0.03 | 0.0023 | -4.777 | 4.48 |
| Fdd2 (No. 43) | orthorhombic | 0.00 | 0.0059 | -4.773 | 4.38 |
| Imm2 (No. 44) | Orthorhombic | — | — | — | 4.37 |
| Imm2 (No. 44) | Orthorhombic | — | — | — | 4.53 |
| Imm2 (No. 44) | Orthorhombic | — | — | — | 4.49 |
| Cc (No. 9) | Monoclinic | — | — | — | 4.36 |
| Cc (No. 9) | Monoclinic | — | — | — | 4.54 |
| Cc (No. 9) | Monoclinic | — | — | — | 4.49 |
| — | — | — | — | — | — |
| — | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
Applications
Where Cu2GeS3 is used.
Frequently Asked Questions
Common questions about Cu2GeS3, answered from cross-validated data.
What is Cu2GeS3?
This compound is a quaternary chalcogenide semiconductor material that has garnered significant interest for its potential in optoelectronic devices. It is primarily investigated for its role as an earth-abundant absorber layer in thin-film solar cells.
What is Cu2GeS3 used for?
What is the band gap of Cu2GeS3?
Is Cu2GeS3 a metal, semiconductor, or insulator?
Is Cu2GeS3 thermodynamically stable?
What is the crystal structure of Cu2GeS3?
What is the density of Cu2GeS3?
How many polymorphs of Cu2GeS3 are known?
What elements does Cu2GeS3 contain?
Where does the data for Cu2GeS3 come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- alexandria — Data from alexandria.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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