LaI3
Lanthanum triiodide · Lanthanum(III) iodide
Lanthanum triiodide is a stable semiconducting lanthanide halide used primarily in specialized optical and detection technologies.

About Lanthanum triiodide
Lanthanum triiodide is a thermodynamically stable inorganic halide that functions as a semiconductor. Its structural integrity and electronic properties make it a subject of significant interest within materials science research, supported by a diverse range of documented structural configurations.
This compound plays a vital role in specialized technological fields where its specific electronic character can be leveraged. As a stable member of the lanthanide halide family, it serves as a foundational material for high-performance optical components and radiation detection systems.
Key Properties
Cross-validated computational properties for Lanthanum triiodide, 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 Lanthanum triiodide is used.
Frequently Asked Questions
Common questions about Lanthanum triiodide, answered from cross-validated data.
What is LaI3?
Lanthanum triiodide is a stable semiconducting lanthanide halide used primarily in specialized optical and detection technologies.
What is LaI3 used for?
What is the band gap of LaI3?
Is LaI3 a metal, semiconductor, or insulator?
Is LaI3 thermodynamically stable?
How many polymorphs of LaI3 are known?
What elements does LaI3 contain?
Where does the data for LaI3 come from?
How It Compares
As a stable lanthanide halide, Lanthanum triiodide represents a key reference point for understanding the structural and electronic behavior of heavy-metal triiodides. It serves as a primary example of how lanthanum-based compounds maintain stability while providing the semiconducting characteristics necessary for advanced material design.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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