Cu2Ga2S4
Cu2Ga2S4 is a stable semiconducting chalcogenide compound investigated for its utility in solar energy conversion and photovoltaic technologies.
About Cu2Ga2S4
Cu2Ga2S4 is a semiconducting chalcogenide that exists as a thermodynamically stable phase within its chemical system. Its structural integrity and electronic properties make it a subject of significant interest for researchers investigating next-generation optoelectronic devices.
As a member of the chalcogenide photovoltaic absorber class, this material is valued for its potential to harvest solar energy efficiently. Its stability on the convex hull suggests it is a robust candidate for thin-film applications where reliable material performance is essential.
Key Properties
Cross-validated computational properties for Cu2Ga2S4, aggregated across 2 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 Cu2Ga2S4, 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-42d (No. 122) | tetragonal | 0.71 | 0.0000 | -10.288 | 4.41 |
| R3m (No. 160) | trigonal | 0.18 | 0.1751 | -10.113 | 4.60 |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
| I-42d (No. 122) | — | — | — | — | — |
Applications
Where Cu2Ga2S4 is used.
Frequently Asked Questions
Common questions about Cu2Ga2S4, answered from cross-validated data.
What is Cu2Ga2S4?
Cu2Ga2S4 is a stable semiconducting chalcogenide compound investigated for its utility in solar energy conversion and photovoltaic technologies.
What is Cu2Ga2S4 used for?
What is the band gap of Cu2Ga2S4?
Is Cu2Ga2S4 a metal, semiconductor, or insulator?
Is Cu2Ga2S4 thermodynamically stable?
What is the crystal structure of Cu2Ga2S4?
What is the density of Cu2Ga2S4?
How many polymorphs of Cu2Ga2S4 are known?
What elements does Cu2Ga2S4 contain?
Where does the data for Cu2Ga2S4 come from?
How It Compares
Within the chalcogenide photovoltaic absorbers class.
Within the diverse family of copper-based chalcogenides, Cu2Ga2S4 serves as a sulfur-based analog to Cu2Ga2Se4, providing a distinct band structure profile that differentiates it from tin-containing counterparts like Cu2SnS3. While many members of this class are explored for their tunable optoelectronic characteristics, Cu2Ga2S4 is notable for its thermodynamic stability, which distinguishes it from more metastable phases often encountered in complex quaternary systems.
Related Compounds
Other Chalcogenide Photovoltaic Absorbers in the database.
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).
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