YSe2
YSe2 is a metastable semiconducting compound composed of yttrium and selenium that exhibits a wide range of structural configurations.
About YSe2
YSe2 is a semiconducting yttrium selenide that exists in a metastable state. Its complex structural landscape is highlighted by a high volume of reported configurations, reflecting the intricate bonding behavior between yttrium and selenium within this binary system. Due to its electronic nature, this compound serves as a subject of interest for researchers investigating non-equilibrium phase stability and the fundamental properties of transition metal chalcogenides. Its ability to adopt numerous structural arrangements makes it a significant case study for understanding phase transitions in selenide materials.
Key Properties
Cross-validated computational properties for YSe2, 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 YSe2 is used.
Frequently Asked Questions
Common questions about YSe2, answered from cross-validated data.
What is YSe2?
YSe2 is a metastable semiconducting compound composed of yttrium and selenium that exhibits a wide range of structural configurations.
What is YSe2 used for?
What is the band gap of YSe2?
Is YSe2 a metal, semiconductor, or insulator?
Is YSe2 thermodynamically stable?
How many polymorphs of YSe2 are known?
What elements does YSe2 contain?
Where does the data for YSe2 come from?
How It Compares
As a metastable binary selenide, YSe2 occupies a unique niche in materials science where its structural variety allows for deep exploration into the synthesis of non-equilibrium phases that are not typically found in more stable, ground-state chalcogenides.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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