Bi12Se26Sr8
Bi12Se26Sr8 is a complex semiconducting bismuth chalcogenide that is considered a viable candidate for experimental synthesis in thermoelectric research.
About Bi12Se26Sr8
Bi12Se26Sr8 is a complex bismuth-based chalcogenide that functions as a semiconductor. Its composition, incorporating strontium alongside bismuth and selenium, places it within a specialized class of materials often investigated for their potential in solid-state energy conversion technologies.
As a near-hull compound, it is considered a promising candidate for experimental synthesis. Its structural complexity suggests unique electronic properties that distinguish it from simpler binary chalcogenides, making it an intriguing subject for researchers aiming to tune thermoelectric performance through chemical substitution.
Key Properties
Cross-validated computational properties for Bi12Se26Sr8, 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 Bi12Se26Sr8, 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. |
|---|---|---|---|---|---|
| P21/m (No. 11) | monoclinic | 0.95 | 0.0053 | -4.515 | 6.32 |
| P21/m (No. 11) | — | — | — | — | — |
| P21/m (No. 11) | monoclinic | — | — | — | 3.29 |
Applications
Where Bi12Se26Sr8 is used.
Frequently Asked Questions
Common questions about Bi12Se26Sr8, answered from cross-validated data.
What is Bi12Se26Sr8?
Bi12Se26Sr8 is a complex semiconducting bismuth chalcogenide that is considered a viable candidate for experimental synthesis in thermoelectric research.
What is Bi12Se26Sr8 used for?
What is the band gap of Bi12Se26Sr8?
Is Bi12Se26Sr8 a metal, semiconductor, or insulator?
Is Bi12Se26Sr8 thermodynamically stable?
What is the crystal structure of Bi12Se26Sr8?
What is the density of Bi12Se26Sr8?
How many polymorphs of Bi12Se26Sr8 are known?
What elements does Bi12Se26Sr8 contain?
Where does the data for Bi12Se26Sr8 come from?
How It Compares
Within the bismuth chalcogenide thermoelectrics class.
Unlike the well-characterized binary systems such as Bi2Se3 or Bi2Te3, which are foundational standards in the field, Bi12Se26Sr8 represents a more intricate structural arrangement. While Bi2Se3 is widely utilized for its established thermoelectric efficiency, this strontium-containing variant offers a distinct chemical environment that may allow for more nuanced control over carrier concentration and thermal conductivity compared to its simpler counterparts.
Related Compounds
Other Bismuth Chalcogenide Thermoelectrics in the database.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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