YO2
YO2 is a semiconducting yttrium oxide phase that is thermodynamically unstable and primarily studied for its structural complexity.
About YO2
YO2 is a semiconducting oxide composed of yttrium and oxygen. It represents a complex phase in the yttrium-oxygen system that has been extensively documented across various structural databases. Its electronic character suggests potential utility in specialized semiconductor applications where specific oxide properties are required. Due to its position relative to the thermodynamic hull, it is considered an unstable phase under standard conditions, making its synthesis and characterization a significant challenge for experimentalists. This instability highlights the intricate nature of metal-oxygen bonding in yttrium-based systems.
Key Properties
Cross-validated computational properties for YO2, 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.
Synthesis Routes
Literature-extracted synthesis procedures targeting YO2.
Applications
Where YO2 is used.
Patent Landscape
1 patent reference YO2 or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 8497542 | ZrXHfYSn1-X-YO2 films as high K gate dielectrics | — | — |
Frequently Asked Questions
Common questions about YO2, answered from cross-validated data.
What is YO2?
YO2 is a semiconducting yttrium oxide phase that is thermodynamically unstable and primarily studied for its structural complexity.
What is YO2 used for?
What is the band gap of YO2?
Is YO2 a metal, semiconductor, or insulator?
Is YO2 thermodynamically stable?
How many polymorphs of YO2 are known?
How is YO2 synthesized?
What elements does YO2 contain?
Where does the data for YO2 come from?
How It Compares
As a unique oxide phase, YO2 exists as an outlier in the landscape of yttrium oxides, which are more commonly found in highly stable, stoichiometric forms. Unlike the more robust and widely utilized yttrium sesquioxide, this compound occupies a metastable region that necessitates precise control over synthesis environments to observe its structural characteristics.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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