Cs2SnI6
Cs2SnI6 is a stable, semiconducting halide perovskite derivative valued for its potential in durable solar cell and optoelectronic technologies.
About Cs2SnI6
Cs2SnI6 is a semiconducting halide material that has garnered significant interest for its favorable electronic properties and structural robustness. As a member of the vacancy-ordered halide perovskite family, it is recognized for being thermodynamically stable, which addresses some of the long-standing durability concerns associated with traditional lead-based perovskites.
This compound is primarily investigated for its potential in next-generation photovoltaic devices and optoelectronic applications. Its unique electronic character makes it a promising candidate for stable, non-toxic alternatives in solar energy harvesting and light-sensing technologies.
Key Properties
Cross-validated computational properties for Cs2SnI6, 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 Cs2SnI6, 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 | 0.29 | 0.0000 | -2.826 | 4.66 |
| Fm-3m (No. 225) | — | — | — | — | — |
| Fm-3m (No. 225) | Cubic | — | — | — | 4.33 |
| Fm-3m (No. 225) | Cubic | — | — | — | 4.46 |
| Fm-3m (No. 225) | Cubic | — | — | — | 4.47 |
Applications
Where Cs2SnI6 is used.
Frequently Asked Questions
Common questions about Cs2SnI6, answered from cross-validated data.
What is Cs2SnI6?
Cs2SnI6 is a stable, semiconducting halide perovskite derivative valued for its potential in durable solar cell and optoelectronic technologies.
What is Cs2SnI6 used for?
What is the band gap of Cs2SnI6?
Is Cs2SnI6 a metal, semiconductor, or insulator?
Is Cs2SnI6 thermodynamically stable?
What is the crystal structure of Cs2SnI6?
What is the density of Cs2SnI6?
How many polymorphs of Cs2SnI6 are known?
What elements does Cs2SnI6 contain?
Where does the data for Cs2SnI6 come from?
How It Compares
Within the halide perovskite photovoltaics class.
Within the broader family of halide perovskites and related halides, Cs2SnI6 distinguishes itself through its vacancy-ordered structure, which provides enhanced stability compared to the more volatile CsSnI3. While many members of this class, such as CsPbBr3, are highly efficient but face challenges regarding environmental sensitivity, Cs2SnI6 offers a more robust framework that maintains semiconducting performance without the same degree of structural degradation.
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).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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