Cs2O2

cesium peroxide · dicesium dioxide

Cesium peroxide is a stable, semiconducting inorganic compound used primarily in specialized chemical synthesis and research.

CsO
Crystal structure of Cs2O2
Ground-state structure · Materials Project
Overview

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.

At a glance

Key Properties

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

Band Gap

1.65 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
1 DFT source

Structures

102
3 databases, 24 space groups
Uses

Applications

Where cesium peroxide is used.

Chemical synthesisLaboratory researchPrecursor for oxygen-rich materials
Reference

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.

More questions
What is Cs2O2 used for?
cesium peroxide (Cs2O2) is used in chemical synthesis, laboratory research, and precursor for oxygen-rich materials.
What is the band gap of Cs2O2?
cesium peroxide (Cs2O2) has a DFT-computed band gap of 1.65 eV across 102 reported structures.
Is Cs2O2 a metal, semiconductor, or insulator?
With a band gap up to 1.65 eV it is a semiconductor.
Is Cs2O2 thermodynamically stable?
Yes — cesium peroxide (Cs2O2) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Cs2O2 are known?
102 structures of Cs2O2 are reported across 3 databases, spanning 24 distinct space groups.
What elements does Cs2O2 contain?
cesium peroxide (Cs2O2) contains Cs and O (2 elements).
Where does the data for Cs2O2 come from?
Cs2O2 data is cross-referenced from latticegraph.
Comparison

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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