Bi2Cd2I2Se4
Bi2Cd2I2Se4 is a metastable, semiconducting quaternary compound containing bismuth, cadmium, iodine, and selenium.
About Bi2Cd2I2Se4
Bi2Cd2I2Se4 is a complex quaternary compound composed of bismuth, cadmium, iodine, and selenium. As a semiconducting material, it exhibits electronic properties that make it a subject of interest for researchers investigating novel optoelectronic and sensing architectures.
This material is characterized by a metastable thermodynamic state, suggesting that its synthesis requires precise control over processing conditions. Its structural complexity and the presence of heavy elements like bismuth and selenium contribute to its distinct physical profile within the landscape of inorganic semiconductors.
Key Properties
Cross-validated computational properties for Bi2Cd2I2Se4, 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 Bi2Cd2I2Se4, 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. |
|---|---|---|---|---|---|
| C2/m (No. 12) | monoclinic | 1.27 | 0.0451 | -3.391 | 6.71 |
| C2/m (No. 12) | — | — | — | — | — |
| — | — | — | — | — | 6.05 |
| — | — | — | — | — | 6.14 |
Applications
Where Bi2Cd2I2Se4 is used.
Frequently Asked Questions
Common questions about Bi2Cd2I2Se4, answered from cross-validated data.
What is Bi2Cd2I2Se4?
Bi2Cd2I2Se4 is a metastable, semiconducting quaternary compound containing bismuth, cadmium, iodine, and selenium.
What is Bi2Cd2I2Se4 used for?
What is the band gap of Bi2Cd2I2Se4?
Is Bi2Cd2I2Se4 a metal, semiconductor, or insulator?
Is Bi2Cd2I2Se4 thermodynamically stable?
What is the crystal structure of Bi2Cd2I2Se4?
What is the density of Bi2Cd2I2Se4?
How many polymorphs of Bi2Cd2I2Se4 are known?
What elements does Bi2Cd2I2Se4 contain?
Where does the data for Bi2Cd2I2Se4 come from?
How It Compares
As a unique quaternary chalcogenide-iodide, Bi2Cd2I2Se4 represents an specialized niche in semiconductor materials science. Unlike more common binary or ternary compounds, its multi-element composition allows for a highly tunable electronic environment, positioning it as a distinct candidate for exploratory research into complex, metastable crystalline systems.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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