K2ZnO2
K2ZnO2 is a thermodynamically stable, semiconducting ternary oxide utilized in the research and development of transparent conducting materials.
About K2ZnO2
K2ZnO2 is a semiconducting oxide that holds a distinct position within the family of transparent conducting oxides. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement that has garnered significant interest in materials databases for its structural reliability.
This compound is primarily studied for its electronic properties, which are essential for the development of next-generation optoelectronic devices. Its ability to maintain structural integrity while exhibiting semiconducting behavior makes it a compelling subject for researchers investigating new pathways in transparent electronics.
Key Properties
Cross-validated computational properties for K2ZnO2, 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 K2ZnO2. 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 K2ZnO2, 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. |
|---|---|---|---|---|---|
| Ibam (No. 72) | orthorhombic | 2.34 | 0.0000 | -1.515 | — |
| Ibam (No. 72) | orthorhombic | 1.98 | 0.0000 | -4.261 | 3.48 |
| — | — | 1.89 | 0.0000 | -1.491 | — |
| — | — | 2.23 | 0.0081 | -1.483 | — |
| — | — | 2.19 | 0.0113 | -1.480 | — |
| — | — | — | 0.0133 | -1.478 | — |
| Ibam (No. 72) | orthorhombic | — | — | — | 3.47 |
| Ibam (No. 72) | orthorhombic | — | — | — | 3.30 |
| Ibam (No. 72) | orthorhombic | — | — | — | 3.45 |
Applications
Where K2ZnO2 is used.
Frequently Asked Questions
Common questions about K2ZnO2, answered from cross-validated data.
What is K2ZnO2?
K2ZnO2 is a thermodynamically stable, semiconducting ternary oxide utilized in the research and development of transparent conducting materials.
What is K2ZnO2 used for?
What is the band gap of K2ZnO2?
Is K2ZnO2 a metal, semiconductor, or insulator?
Is K2ZnO2 thermodynamically stable?
What is the crystal structure of K2ZnO2?
How many polymorphs of K2ZnO2 are known?
What elements does K2ZnO2 contain?
Where does the data for K2ZnO2 come from?
How It Compares
Within the transparent conducting oxides class.
Within the diverse group of transparent conducting oxides, K2ZnO2 stands apart from common binary oxides like ZnO due to its unique ternary composition and alkali-metal integration. While materials such as ZnGa2O4 and BaSnO3 are frequently utilized for their wide-gap insulating or conducting properties, K2ZnO2 offers a different structural framework that contributes to the broader understanding of how alkali-zinc-oxygen systems can be tuned for electronic performance.
Related Compounds
Other Transparent Conducting Oxides in the database.
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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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