C7Si7
C7Si7 has a DFT band gap of 1.37–2.30 eV across 45 reported structures in 7 space groups. Cross-validated across 3 computational databases.
At a glance
Key Properties
Cross-validated computational properties for C7Si7, 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.
1.37–2.30 eV
Range across DFT structures
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.
0.000 eV/atom
Best (lowest) across sources
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.
On hull (stable)
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
45
3 databases, 7 space groups
Reference
Frequently Asked Questions
Common questions about C7Si7, answered from cross-validated data.
What is the band gap of C7Si7?
C7Si7 has a DFT-computed band gap of 1.37–2.30 eV across 45 reported structures.
More questions
Is C7Si7 a metal, semiconductor, or insulator?
With a band gap up to 2.30 eV it is a semiconductor.
Is C7Si7 thermodynamically stable?
Yes — C7Si7 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of C7Si7 are known?
45 structures of C7Si7 are reported across 3 databases, spanning 7 distinct space groups.
What elements does C7Si7 contain?
C7Si7 contains C and Si (2 elements).
Where does the data for C7Si7 come from?
C7Si7 data is cross-referenced from latticegraph.
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Related Compounds
Other Silicon Anode Materials in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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