Ag2PbO2
Ag2PbO2 is a semiconducting silver lead oxide that is considered a viable candidate for experimental synthesis due to its thermodynamic stability.
About Ag2PbO2
Ag2PbO2 is a semiconducting ternary oxide composed of silver, lead, and oxygen. As a near-hull material, it occupies a position of thermodynamic interest, suggesting it is a viable target for experimental synthesis and structural characterization.
Its electronic character makes it a subject of study for researchers exploring complex metal oxides. With multiple reported structures across various databases, it represents a flexible platform for investigating how silver and lead cations coordinate with oxygen in a solid-state lattice.
Key Properties
Cross-validated computational properties for Ag2PbO2, 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 Ag2PbO2. 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 Ag2PbO2, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 1.48 | 0.0000 | -0.646 | — |
| C2/c (No. 15) | monoclinic | 1.34 | 0.0050 | -4.676 | 8.57 |
| — | — | 1.30 | 0.0066 | -0.708 | — |
| C2/c (No. 15) | monoclinic | — | — | — | 8.73 |
| C2/c (No. 15) | monoclinic | — | — | — | 8.71 |
| C2/c (No. 15) | monoclinic | — | — | — | 8.62 |
| C2/c (No. 15) | monoclinic | — | — | — | 8.12 |
| C2/c (No. 15) | monoclinic | — | — | — | 8.43 |
Applications
Where Ag2PbO2 is used.
Frequently Asked Questions
Common questions about Ag2PbO2, answered from cross-validated data.
What is Ag2PbO2?
Ag2PbO2 is a semiconducting silver lead oxide that is considered a viable candidate for experimental synthesis due to its thermodynamic stability.
What is Ag2PbO2 used for?
What is the band gap of Ag2PbO2?
Is Ag2PbO2 a metal, semiconductor, or insulator?
Is Ag2PbO2 thermodynamically stable?
What is the crystal structure of Ag2PbO2?
How many polymorphs of Ag2PbO2 are known?
What elements does Ag2PbO2 contain?
Where does the data for Ag2PbO2 come from?
How It Compares
As a distinct ternary oxide, Ag2PbO2 serves as a specialized example of silver-lead-based materials. It functions as a unique structural candidate within the broader landscape of semiconducting oxides, offering a specific stoichiometry that differentiates it from simpler binary metal oxides.
Data sources & attribution
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- 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)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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