KBiF4
Potassium bismuth tetrafluoride is a crystalline inorganic compound often studied for its optical and structural properties. It is primarily utilized in materials science research, particularly in the development of advanced luminescent materials and specialized glass compositions.
Key Properties
Cross-validated computational properties for KBiF4, 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 KBiF4, 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. |
|---|---|---|---|---|---|
| Fd-3m (No. 227) | cubic | 3.23 | 0.0413 | -4.962 | 5.18 |
| Cm (No. 8) | monoclinic | 4.19 | 0.1454 | -4.858 | 4.85 |
| Fd-3m (No. 227) | Cubic | — | — | — | 5.18 |
| Fd-3m (No. 227) | Cubic | — | — | — | 5.45 |
| Fd-3m (No. 227) | Cubic | — | — | — | 5.39 |
| Fd-3m (No. 227) | — | — | — | — | — |
| Cm (No. 8) | Monoclinic | — | — | — | 4.85 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.11 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.02 |
Applications
Where KBiF4 is used.
Frequently Asked Questions
Common questions about KBiF4, answered from cross-validated data.
What is KBiF4?
Potassium bismuth tetrafluoride is a crystalline inorganic compound often studied for its optical and structural properties. It is primarily utilized in materials science research, particularly in the development of advanced luminescent materials and specialized glass compositions.
What is KBiF4 used for?
What is the band gap of KBiF4?
Is KBiF4 a metal, semiconductor, or insulator?
Is KBiF4 thermodynamically stable?
What is the crystal structure of KBiF4?
What is the density of KBiF4?
How many polymorphs of KBiF4 are known?
What elements does KBiF4 contain?
Where does the data for KBiF4 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.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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