Cs2O2
cesium peroxide · dicesium dioxide
Cesium peroxide is a stable, semiconducting inorganic compound used primarily in specialized chemical synthesis and research.

About cesium peroxide
Cesium peroxide is a thermodynamically stable inorganic compound composed of cesium and oxygen. As a member of the alkali metal peroxide family, it exhibits semiconducting electronic properties that distinguish it from more common ionic oxides. Its position on the convex hull indicates high structural stability, making it a reliable subject for fundamental solid-state research.
This compound is primarily utilized in specialized chemical synthesis and laboratory research where reactive oxygen species are required. Its unique electronic character and stability profile allow it to serve as a precursor in the development of complex materials, providing a controlled environment for studying oxygen-rich alkali metal interactions.
Key Properties
Cross-validated computational properties for cesium peroxide, 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 cesium peroxide is used.
Frequently Asked Questions
Common questions about cesium peroxide, answered from cross-validated data.
What is Cs2O2?
Cesium peroxide is a stable, semiconducting inorganic compound used primarily in specialized chemical synthesis and research.
What is Cs2O2 used for?
What is the band gap of Cs2O2?
Is Cs2O2 a metal, semiconductor, or insulator?
Is Cs2O2 thermodynamically stable?
How many polymorphs of Cs2O2 are known?
What elements does Cs2O2 contain?
Where does the data for Cs2O2 come from?
How It Compares
As a distinct peroxide, this compound represents a specialized phase within the broader landscape of alkali metal oxides, characterized by its reliable thermodynamic stability and semiconducting behavior.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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