O42V18
O42V18 is a semiconducting vanadium oxide material being studied for its potential roles in electrochromic and refractory applications.
About O42V18
O42V18 is a semiconducting oxide composed of vanadium and oxygen, belonging to the broader class of electrochromic and refractory-metal oxides. Its electronic properties and structural arrangement make it a subject of interest for researchers investigating advanced thin-film materials and switchable optical devices.
As a near-hull compound, it is considered likely synthesizable under controlled laboratory conditions. Its existence within a data-rich landscape of vanadium-based structures highlights its importance in understanding the complex phase space of transition metal oxides and their potential for future technological integration.
Key Properties
Cross-validated computational properties for O42V18, 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.
Reported Structures
Lowest-energy structures reported for O42V18, 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 | 1.12 | 0.0206 | -8.527 | 3.42 |
| I4/mmm (No. 139) | tetragonal | 0.00 | 0.0365 | -8.511 | 3.78 |
| Pnma (No. 62) | orthorhombic | 1.45 | 0.0633 | -8.485 | 2.89 |
| P31c (No. 159) | trigonal | 1.16 | 0.0948 | -8.453 | 2.61 |
| P-31c (No. 163) | trigonal | 0.31 | 0.1310 | -8.417 | 2.75 |
| — | — | — | — | — | 3.38 |
| No. 0 | unknown | — | — | — | 1.00 |
| — | — | — | — | — | 3.38 |
Applications
Where O42V18 is used.
Frequently Asked Questions
Common questions about O42V18, answered from cross-validated data.
What is O42V18?
O42V18 is a semiconducting vanadium oxide material being studied for its potential roles in electrochromic and refractory applications.
What is O42V18 used for?
What is the band gap of O42V18?
Is O42V18 a metal, semiconductor, or insulator?
Is O42V18 thermodynamically stable?
What is the crystal structure of O42V18?
What is the density of O42V18?
How many polymorphs of O42V18 are known?
What elements does O42V18 contain?
Where does the data for O42V18 come from?
How It Compares
Within the electrochromic and refractory-metal oxides class.
Within the class of refractory-metal oxides, O42V18 occupies a unique structural niche compared to more common, highly stable oxides like V2O5 or WO3. While V2O5 remains the benchmark for vanadium-based electrochromic materials, O42V18 offers a distinct stoichiometry that challenges standard models of oxidation states and structural stability seen in simpler oxides like MoO2 or NbO2.
Related Compounds
Other Electrochromic and Refractory-Metal Oxides in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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