RbAgO2
RbAgO2 is a stable, semiconducting ternary oxide containing rubidium, silver, and oxygen.
About RbAgO2
RbAgO2 is a ternary oxide composed of rubidium, silver, and oxygen. As a thermodynamically stable phase residing on the convex hull, it represents a robust crystalline arrangement that is of significant interest for fundamental materials characterization and solid-state studies.
Exhibiting semiconducting electronic character, this compound serves as a valuable subject for investigating the interplay between heavy alkali metals and transition metal oxides. Its structural complexity is evidenced by the numerous distinct configurations reported across major crystallographic databases.
Key Properties
Cross-validated computational properties for RbAgO2, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of RbAgO2. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for RbAgO2, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| Cmcm (No. 63) | orthorhombic | 1.04 | 0.0000 | -4.439 | 4.44 |
| Pmmm (No. 47) | orthorhombic | 0.81 | 0.0000 | -0.815 | — |
| Cmcm (No. 63) | orthorhombic | 1.14 | 0.0028 | -0.812 | — |
| C2/c (No. 15) | monoclinic | 1.18 | 0.0117 | -4.427 | 4.27 |
| C2/c (No. 15) | monoclinic | 1.25 | 0.0171 | -0.798 | — |
| — | — | 1.11 | 0.0237 | -0.797 | — |
| Pmmm (No. 47) | orthorhombic | 0.68 | 0.0485 | -4.391 | 5.04 |
| C2/c (No. 15) | monoclinic | — | — | — | 4.16 |
| C2/c (No. 15) | monoclinic | — | — | — | 4.01 |
| Pmmm (No. 47) | orthorhombic | — | — | — | 5.04 |
| Cmcm (No. 63) | orthorhombic | — | — | — | 4.12 |
| C2/c (No. 15) | monoclinic | — | — | — | 4.31 |
Applications
Where RbAgO2 is used.
Frequently Asked Questions
Common questions about RbAgO2, answered from cross-validated data.
What is RbAgO2?
RbAgO2 is a stable, semiconducting ternary oxide containing rubidium, silver, and oxygen.
What is RbAgO2 used for?
What is the band gap of RbAgO2?
Is RbAgO2 a metal, semiconductor, or insulator?
Is RbAgO2 thermodynamically stable?
What is the crystal structure of RbAgO2?
What is the density of RbAgO2?
How many polymorphs of RbAgO2 are known?
What elements does RbAgO2 contain?
Where does the data for RbAgO2 come from?
How It Compares
As a unique ternary oxide, RbAgO2 occupies a distinct position in materials science research. While many silver-based oxides are known for their reactivity or instability, this compound stands out due to its inherent thermodynamic stability, making it a reliable reference point for exploring the electronic properties of alkali-silver oxide systems.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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