CsSnI3
Cesium tin triiodide · CsSnI3
Cesium tin triiodide is a perovskite-structured semiconductor material known for its optoelectronic properties. It is primarily researched for its potential as a lead-free alternative in thin-film solar cells and light-emitting devices.
Key Properties
Cross-validated computational properties for Cesium tin triiodide, 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 CsSnI3, 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. |
|---|---|---|---|---|---|
| Pm-3m (No. 221) | cubic | 0.45 | 0.0000 | -3.079 | 4.23 |
| Pnma (No. 62) | orthorhombic | 2.06 | 0.0032 | -3.076 | 4.61 |
| Pnma (No. 62) | orthorhombic | 0.62 | 0.0111 | -3.068 | 4.39 |
| P4/mbm (No. 127) | tetragonal | 0.55 | 0.0118 | -3.068 | 4.40 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.37 |
| Pm-3m (No. 221) | Cubic | — | — | — | 4.23 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.28 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.45 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.56 |
| P4/mbm (No. 127) | Tetragonal | — | — | — | 4.37 |
| P4/mbm (No. 127) | Tetragonal | — | — | — | 4.42 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 4.40 |
Applications
Where Cesium tin triiodide is used.
Frequently Asked Questions
Common questions about Cesium tin triiodide, answered from cross-validated data.
What is CsSnI3?
Cesium tin triiodide is a perovskite-structured semiconductor material known for its optoelectronic properties. It is primarily researched for its potential as a lead-free alternative in thin-film solar cells and light-emitting devices.
What is CsSnI3 used for?
What is the band gap of CsSnI3?
Is CsSnI3 a metal, semiconductor, or insulator?
Is CsSnI3 thermodynamically stable?
What is the crystal structure of CsSnI3?
What is the density of CsSnI3?
How many polymorphs of CsSnI3 are known?
What elements does CsSnI3 contain?
Where does the data for CsSnI3 come from?
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).
- mpaloe — Data from mpaloe.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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