Co2Ge1Se1
Co2Ge1Se1 is a thermodynamically stable semiconducting material composed of cobalt, germanium, and selenium.
About Co2Ge1Se1
Co2Ge1Se1 is a distinct ternary compound composed of cobalt, germanium, and selenium. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement within its elemental system.
This material exhibits semiconducting electronic character, making it a subject of interest for fundamental solid-state physics and materials science exploration. Its stability suggests it can be synthesized and utilized in various experimental configurations for electronic device research.
Key Properties
Cross-validated computational properties for Co2Ge1Se1, 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 Co2Ge1Se1, 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. |
|---|---|---|---|---|---|
| R-3 (No. 148) | trigonal | 0.37 | 0.0000 | -5.352 | 6.29 |
| Cm (No. 8) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
Applications
Where Co2Ge1Se1 is used.
Frequently Asked Questions
Common questions about Co2Ge1Se1, answered from cross-validated data.
What is Co2Ge1Se1?
Co2Ge1Se1 is a thermodynamically stable semiconducting material composed of cobalt, germanium, and selenium.
What is Co2Ge1Se1 used for?
What is the band gap of Co2Ge1Se1?
Is Co2Ge1Se1 a metal, semiconductor, or insulator?
Is Co2Ge1Se1 thermodynamically stable?
What is the crystal structure of Co2Ge1Se1?
What is the density of Co2Ge1Se1?
How many polymorphs of Co2Ge1Se1 are known?
What elements does Co2Ge1Se1 contain?
Where does the data for Co2Ge1Se1 come from?
How It Compares
As a unique ternary phase, Co2Ge1Se1 serves as a foundational example of cobalt-germanium-selenide chemistry, providing a stable reference point for future investigations into similar chalcogenide systems.
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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