KTe
KTe is a stable semiconducting material composed of potassium and tellurium.
About KTe
KTe is a binary compound consisting of potassium and tellurium that exhibits semiconducting electronic characteristics. As a thermodynamically stable phase located on the convex hull, it represents a robust configuration of these elements that is well-represented in structural databases.
Its significance lies in its stability and the specific electronic properties afforded by its composition. Researchers utilize this compound to investigate the fundamental interactions between alkali metals and chalcogens in solid-state systems.
Key Properties
Cross-validated computational properties for KTe, aggregated across 6 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 KTe. 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 KTe, 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. |
|---|---|---|---|---|---|
| P63/mmc (No. 194) | hexagonal | 0.67 | 0.0000 | -16.731 | 3.28 |
| P63/mmc (No. 194) | hexagonal | 0.63 | 0.0000 | -0.909 | — |
| — | — | 0.39 | 0.0000 | -0.845 | — |
| — | — | 0.78 | 0.0004 | -0.845 | — |
| P-62m (No. 189) | hexagonal | 0.21 | 0.0035 | -16.728 | 3.20 |
| P-62m (No. 189) | hexagonal | 0.20 | 0.0109 | -0.898 | — |
| — | — | 0.00 | 0.0182 | -0.827 | — |
| — | — | 0.00 | 0.1292 | -0.716 | — |
| — | — | 0.00 | 0.2501 | -0.595 | — |
| — | — | 0.00 | 0.3033 | -0.542 | — |
| — | — | 0.00 | 0.3072 | -0.538 | — |
| P-6m2 (No. 187) | hexagonal | 0.00 | 0.3326 | -0.576 | — |
Applications
Where KTe is used.
Frequently Asked Questions
Common questions about KTe, answered from cross-validated data.
What is KTe?
KTe is a stable semiconducting material composed of potassium and tellurium.
What is KTe used for?
What is the band gap of KTe?
Is KTe a metal, semiconductor, or insulator?
Is KTe thermodynamically stable?
What is the crystal structure of KTe?
What is the density of KTe?
How many polymorphs of KTe are known?
What elements does KTe contain?
Where does the data for KTe come from?
How It Compares
As a stable binary phase, KTe serves as a foundational example of potassium-telluride chemistry, providing a benchmark for understanding the structural diversity and electronic behavior of similar alkali-chalcogenide systems.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (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)
- 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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