BiCaK
BiCaK is a thermodynamically stable semiconducting material being researched for its potential integration into next-generation photovoltaic devices.
About BiCaK
BiCaK is a semiconducting compound that occupies a stable position on the thermodynamic convex hull. Its structural characteristics make it a subject of interest for researchers exploring new materials for optoelectronic applications. The compound is part of the broader halide perovskite family, a class of materials widely recognized for their tunable electronic properties and potential to transform high-efficiency solar energy harvesting.
Key Properties
Cross-validated computational properties for BiCaK, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of BiCaK. Tight agreement means computed properties can be trusted without re-running calculations.
Only 1 independent DFT source (materials_project) reports a hull energy for BiCaK, so cross-source agreement can't be assessed yet.
Reported Structures
Lowest-energy structures reported for BiCaK, 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. |
|---|---|---|---|---|---|
| P4/nmm (No. 129) | tetragonal | 0.83 | 0.0000 | -24.710 | 3.87 |
| P4/nmm (No. 129) | tetragonal | — | — | — | 3.94 |
| P4/nmm (No. 129) | tetragonal | — | — | — | 3.84 |
| F-43m (No. 216) | cubic | — | — | — | — |
Applications
Where BiCaK is used.
Frequently Asked Questions
Common questions about BiCaK, answered from cross-validated data.
What is BiCaK?
BiCaK is a thermodynamically stable semiconducting material being researched for its potential integration into next-generation photovoltaic devices.
What is BiCaK used for?
What is the band gap of BiCaK?
Is BiCaK a metal, semiconductor, or insulator?
Is BiCaK thermodynamically stable?
What is the crystal structure of BiCaK?
What is the density of BiCaK?
How many polymorphs of BiCaK are known?
What elements does BiCaK contain?
Where does the data for BiCaK come from?
How It Compares
Within the halide perovskite photovoltaics class.
Unlike the widely studied lead-based perovskites such as CsPbBr3 or CsSnI3, BiCaK represents a distinct compositional approach within the halide perovskite landscape, offering a unique structural framework that differentiates it from more traditional halide-based semiconductors.
Related Compounds
Other Halide Perovskite Photovoltaics in the database.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- alexandria — Data from Alexandria. Cite: Schmidt et al., npj Comput. Mater. 10, 200 (2024). (CC-BY-4.0)
- nomad — Data from NOMAD (nomad-lab.eu). Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019). (CC-BY-4.0)
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