K2SnO2
K2SnO2 is a thermodynamically stable semiconducting oxide belonging to the perovskite structural family.
About K2SnO2
K2SnO2 is a semiconducting perovskite oxide that occupies a stable position on the thermodynamic convex hull. Its electronic character makes it an intriguing subject for research into functional oxide materials where precise control over charge transport is required.
As a member of the diverse perovskite family, this compound benefits from a well-documented structural landscape. Its stability suggests potential for integration into complex material systems where robust phase behavior is essential for device reliability.
Key Properties
Cross-validated computational properties for K2SnO2, 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 K2SnO2. 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 K2SnO2, 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. |
|---|---|---|---|---|---|
| — | — | 2.56 | 0.0000 | -1.602 | — |
| P-1 (No. 2) | triclinic | 1.78 | 0.0000 | -1.600 | — |
| P-1 (No. 2) | triclinic | 1.54 | 0.0000 | -4.918 | 3.49 |
| — | — | 0.00 | 0.3314 | -1.271 | — |
| P-1 (No. 2) | triclinic | — | — | — | 3.47 |
| P-1 (No. 2) | triclinic | — | — | — | 3.34 |
| P-1 (No. 2) | triclinic | — | — | — | 3.41 |
Applications
Where K2SnO2 is used.
Frequently Asked Questions
Common questions about K2SnO2, answered from cross-validated data.
What is K2SnO2?
K2SnO2 is a thermodynamically stable semiconducting oxide belonging to the perovskite structural family.
What is K2SnO2 used for?
What is the band gap of K2SnO2?
Is K2SnO2 a metal, semiconductor, or insulator?
Is K2SnO2 thermodynamically stable?
What is the crystal structure of K2SnO2?
How many polymorphs of K2SnO2 are known?
What elements does K2SnO2 contain?
Where does the data for K2SnO2 come from?
How It Compares
Within the perovskite oxides class.
Unlike the more widely studied transition-metal perovskites such as BaTiO3 or LaMnO3, which are frequently utilized for their ferroelectric or magnetic properties, K2SnO2 offers a distinct electronic profile as a semiconductor. While siblings like LaAlO3 are often employed as insulating substrates, K2SnO2 provides a different functional niche within the broader class of oxide materials.
Related Compounds
Other Perovskite Oxides in the database.
Data sources & attribution
- 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)
- 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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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