SeI2
Selenium diiodide is a stable semiconducting material formed from selenium and iodine that is frequently studied for its structural and electronic characteristics.
About SeI2
Selenium diiodide is a semiconducting compound composed of selenium and iodine. As a thermodynamically stable phase located on the convex hull, it represents a well-defined chemical arrangement that maintains structural integrity under standard conditions.
With extensive data available across multiple structural databases, this compound serves as a significant subject for researchers investigating chalcogen-halide interactions. Its electronic character suggests potential utility in specialized electronic or optoelectronic applications where specific semiconductor properties are required.
Key Properties
Cross-validated computational properties for SeI2, 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.
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 SeI2 is used.
Frequently Asked Questions
Common questions about SeI2, answered from cross-validated data.
What is SeI2?
Selenium diiodide is a stable semiconducting material formed from selenium and iodine that is frequently studied for its structural and electronic characteristics.
What is SeI2 used for?
What is the band gap of SeI2?
Is SeI2 a metal, semiconductor, or insulator?
Is SeI2 thermodynamically stable?
How many polymorphs of SeI2 are known?
What elements does SeI2 contain?
Where does the data for SeI2 come from?
How It Compares
As a unique binary chalcogen-halide, Selenium diiodide occupies a distinct position in materials research, serving as a fundamental reference point for understanding the bonding and stability trends within selenium-iodine systems.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
Analyze SeI2 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →