SiI2
SiI2 is a metastable semiconducting compound composed of silicon and iodine that is studied for its structural properties in the context of silicon-based materials.
About SiI2
SiI2 is a metastable silicon-iodide compound that functions within the broader landscape of silicon-based materials. As a semiconducting species, it represents a unique structural configuration that researchers study to understand phase stability and potential electrochemical pathways in energy storage systems.
Its significance lies in the diverse structural possibilities inherent to silicon-iodide chemistry. By investigating this compound, scientists gain insights into the fundamental behavior of silicon-based anodes, contributing to the development of more robust materials for next-generation battery architectures.
Key Properties
Cross-validated computational properties for SiI2, 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.
Applications
Where SiI2 is used.
Frequently Asked Questions
Common questions about SiI2, answered from cross-validated data.
What is SiI2?
SiI2 is a metastable semiconducting compound composed of silicon and iodine that is studied for its structural properties in the context of silicon-based materials.
What is SiI2 used for?
What is the band gap of SiI2?
Is SiI2 a metal, semiconductor, or insulator?
Is SiI2 thermodynamically stable?
How many polymorphs of SiI2 are known?
What elements does SiI2 contain?
Where does the data for SiI2 come from?
How It Compares
Within the silicon anode materials class.
Unlike the highly stable and widely utilized elemental silicon or the robust silicides like MoSi2 and Mg2Si, SiI2 exists in a metastable state. While compounds such as BaSi2 are frequently explored for their specific optoelectronic properties, SiI2 is primarily examined for its structural complexity and the role of iodine in modifying the silicon framework compared to more conventional metal silicides.
Related Compounds
Other Silicon Anode Materials in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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