KYO2

KYO2 is a stable, insulating potassium yttrium oxide used in fundamental materials science research.

KOY
Crystal structure of KYO2
Ground-state structure · Materials Project
Overview

About KYO2

KYO2 is a chemically distinct oxide composed of potassium, yttrium, and oxygen. As a thermodynamically stable compound residing on the convex hull, it represents a robust phase that maintains structural integrity under standard conditions.

This material functions as a wide-band-gap insulator, a characteristic that makes it an interesting candidate for specialized electronic and optical applications. Its structural diversity, evidenced by multiple reported configurations, highlights its versatility in solid-state chemistry.

At a glance

Key Properties

Cross-validated computational properties for KYO2, aggregated across 3 databases.

Band Gap

3.97 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

8
3 databases, 3 space groups
Uses

Applications

Where KYO2 is used.

Solid-state electronic researchOptical materials developmentFundamental materials science studies
Reference

Frequently Asked Questions

Common questions about KYO2, answered from cross-validated data.

What is KYO2?

KYO2 is a stable, insulating potassium yttrium oxide used in fundamental materials science research.

More questions
What is KYO2 used for?
KYO2 is used in solid-state electronic research, optical materials development, and fundamental materials science studies.
What is the band gap of KYO2?
KYO2 has a DFT-computed band gap of 3.97 eV across 8 reported structures.
Is KYO2 a metal, semiconductor, or insulator?
With a wide band gap up to 3.97 eV it is an insulator / wide-band-gap material.
Is KYO2 thermodynamically stable?
Yes — KYO2 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of KYO2 are known?
8 structures of KYO2 are reported across 3 databases, spanning 3 distinct space groups.
What elements does KYO2 contain?
KYO2 contains K, O, and Y (3 elements).
Where does the data for KYO2 come from?
KYO2 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a unique oxide phase, KYO2 serves as a foundational example of potassium-yttrium-based materials. While it currently stands as a singular representative in this specific compositional space, its stability and insulating nature provide a benchmark for evaluating future complex oxides with similar elemental profiles.

Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

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