Cu2K2Te2
Cu2K2Te2 is a thermodynamically stable semiconducting ternary compound consisting of copper, potassium, and tellurium.
About Cu2K2Te2
Cu2K2Te2 is a distinct ternary compound composed of copper, potassium, and tellurium. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural arrangement that is well-supported by multiple reported experimental and computational entries. Its electronic character as a semiconductor suggests interesting potential for specialized optoelectronic or thermoelectric applications where specific charge carrier behaviors are required. The material is notable for its structural diversity, with several distinct configurations documented across major materials databases, highlighting its significance in solid-state chemistry. This stability makes it a compelling candidate for further investigation into its fundamental physical properties and potential integration into complex material systems.
Key Properties
Cross-validated computational properties for Cu2K2Te2, 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 Cu2K2Te2, 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 | 0.60 | 0.0000 | -3.515 | 4.45 |
| P63/mmc (No. 194) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 2.23 |
| — | — | — | — | — | 4.59 |
Applications
Where Cu2K2Te2 is used.
Frequently Asked Questions
Common questions about Cu2K2Te2, answered from cross-validated data.
What is Cu2K2Te2?
Cu2K2Te2 is a thermodynamically stable semiconducting ternary compound consisting of copper, potassium, and tellurium.
What is Cu2K2Te2 used for?
What is the band gap of Cu2K2Te2?
Is Cu2K2Te2 a metal, semiconductor, or insulator?
Is Cu2K2Te2 thermodynamically stable?
What is the crystal structure of Cu2K2Te2?
What is the density of Cu2K2Te2?
How many polymorphs of Cu2K2Te2 are known?
What elements does Cu2K2Te2 contain?
Where does the data for Cu2K2Te2 come from?
How It Compares
As a unique ternary phase, Cu2K2Te2 occupies a distinct position within the landscape of copper-potassium-telluride systems, serving as a foundational reference point for exploring the electronic and structural trends of this specific elemental combination.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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