SiSe2
SiSe2 has a DFT band gap of 1.85–2.48 eV across 130 reported structures in 26 space groups. Cross-validated across 3 computational databases.
At a glance
Key Properties
Cross-validated computational properties for SiSe2, 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.
1.85–2.48 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)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
130
3 databases, 26 space groups
Reference
Frequently Asked Questions
Common questions about SiSe2, answered from cross-validated data.
What is the band gap of SiSe2?
SiSe2 has a DFT-computed band gap of 1.85–2.48 eV across 130 reported structures.
More questions
Is SiSe2 a metal, semiconductor, or insulator?
With a band gap up to 2.48 eV it is a semiconductor.
Is SiSe2 thermodynamically stable?
Yes — SiSe2 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of SiSe2 are known?
130 structures of SiSe2 are reported across 3 databases, spanning 26 distinct space groups.
What elements does SiSe2 contain?
SiSe2 contains Se and Si (2 elements).
Where does the data for SiSe2 come from?
SiSe2 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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