CdCO
CdCO is a semimetallic oxide compound known for its structural diversity and metastable nature within the transparent conducting oxide class.
About CdCO
CdCO is an intriguing inorganic compound categorized within the family of transparent conducting oxides. Characterized by a near-zero-gap electronic structure, it exhibits semimetallic behavior that distinguishes it from typical wide-gap insulators found in this material class. Due to its thermodynamic position above the hull, it is considered a metastable phase, which presents unique challenges and opportunities for synthesis and characterization.
Despite its instability, the compound has been the subject of significant investigation, with numerous reported structures across major materials databases. Its electronic nature suggests potential interest for researchers exploring unconventional charge transport mechanisms in oxide systems, even if its practical deployment remains limited by its thermodynamic state compared to more robust oxide materials.
Key Properties
Cross-validated computational properties for CdCO, aggregated across 4 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.
Reported Structures
Lowest-energy structures reported for CdCO, 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 | 0.02 | 1.5126 | -6.393 | 0.94 |
| No. 0 | unknown | — | — | — | 0.68 |
| No. 0 | unknown | — | — | — | 0.68 |
| No. 0 | unknown | — | — | — | 0.68 |
| Pmm2 (No. 25) | Orthorhombic | — | — | — | 5.43 |
| Cm (No. 8) | Monoclinic | — | — | — | 4.79 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.70 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.86 |
| Pm (No. 6) | Monoclinic | — | — | — | 5.89 |
| P21/m (No. 11) | Monoclinic | — | — | — | 6.25 |
| P-6m2 (No. 187) | — | — | — | — | — |
Frequently Asked Questions
Common questions about CdCO, answered from cross-validated data.
What is CdCO?
CdCO is a semimetallic oxide compound known for its structural diversity and metastable nature within the transparent conducting oxide class.
What is the band gap of CdCO?
Is CdCO a metal, semiconductor, or insulator?
Is CdCO thermodynamically stable?
What is the crystal structure of CdCO?
What is the density of CdCO?
How many polymorphs of CdCO are known?
What elements does CdCO contain?
Where does the data for CdCO come from?
How It Compares
Within the transparent conducting oxides class.
Unlike the highly stable and widely utilized ZnO, which serves as a benchmark for transparent conducting oxides, CdCO occupies a more precarious thermodynamic position. While siblings like BaSnO3 and ZnGa2O4 are prized for their structural robustness and predictable electronic performance, CdCO is defined by its semimetallic character, setting it apart from the insulating or semiconducting nature of most other members in this class.
Related Compounds
Other Transparent Conducting Oxides in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
Analyze CdCO in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →