Cs4F20Te4
Cs4F20Te4 is a thermodynamically stable, insulating inorganic compound containing cesium, fluorine, and tellurium.
About Cs4F20Te4
Cs4F20Te4 is a complex inorganic compound composed of cesium, fluorine, and tellurium. As a thermodynamically stable material situated on the convex hull, it represents a robust configuration of these elements that maintains structural integrity under standard conditions. Its electronic character is defined by a wide band gap, classifying it as an insulator with significant potential for specialized dielectric applications. The compound is characterized by a well-defined structural profile, supported by multiple entries across major materials databases. This stability and electronic nature make it a compelling subject for researchers investigating complex halide-telluride systems where insulating properties are required for device performance. Its existence as a stable phase suggests it could serve as a foundational building block for more intricate multi-component materials.
Key Properties
Cross-validated computational properties for Cs4F20Te4, 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 Cs4F20Te4, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 4.63 | 0.0000 | -12.022 | 4.30 |
| Pnma (No. 62) | — | — | — | — | — |
| — | — | — | — | — | 2.97 |
Applications
Where Cs4F20Te4 is used.
Frequently Asked Questions
Common questions about Cs4F20Te4, answered from cross-validated data.
What is Cs4F20Te4?
Cs4F20Te4 is a thermodynamically stable, insulating inorganic compound containing cesium, fluorine, and tellurium.
What is Cs4F20Te4 used for?
What is the band gap of Cs4F20Te4?
Is Cs4F20Te4 a metal, semiconductor, or insulator?
Is Cs4F20Te4 thermodynamically stable?
What is the crystal structure of Cs4F20Te4?
What is the density of Cs4F20Te4?
How many polymorphs of Cs4F20Te4 are known?
What elements does Cs4F20Te4 contain?
Where does the data for Cs4F20Te4 come from?
How It Compares
As a unique phase within its specific chemical system, Cs4F20Te4 occupies a distinct position as a stable, wide-gap insulator. While it does not share its immediate structural space with other closely related siblings in this specific dataset, its thermodynamic stability distinguishes it as a reliable candidate for further experimental characterization compared to more transient or metastable phases that might appear in similar chemical environments.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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