KSnSe2
This compound is a ternary chalcogenide material composed of potassium, tin, and selenium. It is primarily studied in materials science research for its potential electronic and structural properties in semiconductor applications.
Key Properties
Cross-validated computational properties for KSnSe2, 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 KSnSe2, 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. |
|---|---|---|---|---|---|
| Cm (No. 8) | monoclinic | 1.17 | 0.0000 | -4.175 | 3.91 |
| I4cm (No. 108) | tetragonal | 0.00 | 0.0956 | -3.944 | 4.29 |
| I4/mcm (No. 140) | — | — | — | — | — |
| I4cm (No. 108) | Tetragonal | — | — | — | 4.29 |
| I4cm (No. 108) | Tetragonal | — | — | — | 4.44 |
| I4cm (No. 108) | Tetragonal | — | — | — | 4.42 |
| I4/mcm (No. 140) | — | — | — | — | — |
Applications
Where KSnSe2 is used.
Frequently Asked Questions
Common questions about KSnSe2, answered from cross-validated data.
What is KSnSe2?
This compound is a ternary chalcogenide material composed of potassium, tin, and selenium. It is primarily studied in materials science research for its potential electronic and structural properties in semiconductor applications.
What is KSnSe2 used for?
What is the band gap of KSnSe2?
Is KSnSe2 a metal, semiconductor, or insulator?
Is KSnSe2 thermodynamically stable?
What is the crystal structure of KSnSe2?
What is the density of KSnSe2?
How many polymorphs of KSnSe2 are known?
What elements does KSnSe2 contain?
Where does the data for KSnSe2 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).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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