AgCs2F6Y
AgCs2F6Y is a thermodynamically stable, wide-gap insulating halide perovskite material.
About AgCs2F6Y
AgCs2F6Y is a distinct member of the halide perovskite class, characterized by its wide-gap insulating electronic nature. Its position on the thermodynamic convex hull suggests robust structural stability, making it a subject of interest for fundamental materials research within the broader perovskite family.
This compound represents an intriguing variation in halide chemistry, utilizing a complex arrangement of silver, cesium, fluorine, and yttrium. Its stability profile differentiates it from many volatile perovskite counterparts, positioning it as a stable candidate for specialized optoelectronic investigations.
Key Properties
Cross-validated computational properties for AgCs2F6Y, 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 AgCs2F6Y, 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. |
|---|---|---|---|---|---|
| Fm-3m (No. 225) | cubic | 3.35 | 0.0000 | -5.473 | 4.60 |
| Fm-3m (No. 225) | — | — | — | — | — |
| — | — | — | — | — | 4.62 |
| — | — | — | — | — | 4.62 |
Applications
Where AgCs2F6Y is used.
Frequently Asked Questions
Common questions about AgCs2F6Y, answered from cross-validated data.
What is AgCs2F6Y?
AgCs2F6Y is a thermodynamically stable, wide-gap insulating halide perovskite material.
What is AgCs2F6Y used for?
What is the band gap of AgCs2F6Y?
Is AgCs2F6Y a metal, semiconductor, or insulator?
Is AgCs2F6Y thermodynamically stable?
What is the crystal structure of AgCs2F6Y?
What is the density of AgCs2F6Y?
How many polymorphs of AgCs2F6Y are known?
What elements does AgCs2F6Y contain?
Where does the data for AgCs2F6Y come from?
How It Compares
Within the halide perovskite photovoltaics class.
Unlike the highly conductive and widely utilized CsPbBr3 or CsSnI3, which are staples in high-efficiency solar cell research, AgCs2F6Y functions as a wide-gap insulator. While its siblings are often optimized for charge transport in photovoltaics, this compound offers a contrasting electronic profile that may be better suited for dielectric or specialized barrier applications within halide-based device architectures.
Related Compounds
Other Halide Perovskite Photovoltaics in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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