Sb4Se8Tl4
Sb4Se8Tl4 has a DFT band gap of 0.07–0.83 eV across 9 reported structures in 6 space groups; its lowest-energy polymorph is monoclinic (P21/m (No. 11)). Cross-validated across 3 computational databases.
At a glance
Key Properties
Cross-validated computational properties for Sb4Se8Tl4, 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.
0.07–0.83 eV
Range across DFT structures
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.
0.000 eV/atom
Best (lowest) across sources
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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
9
3 databases, 6 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for Sb4Se8Tl4, 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 | 0.83 | 0.0000 | -27.266 | 6.92 |
| Amm2 (No. 38) | orthorhombic | 0.07 | 0.0349 | -27.231 | 6.40 |
| Pm (No. 6) | monoclinic | 0.00 | 0.2499 | -27.016 | 7.06 |
| Pmm2 (No. 25) | orthorhombic | 0.00 | 0.2787 | -26.987 | 7.16 |
| Cmmm (No. 65) | orthorhombic | 0.00 | 0.6504 | -26.616 | 5.72 |
| P21 (No. 4) | — | — | — | — | — |
| — | — | — | — | — | 6.02 |
| — | — | — | — | — | 6.77 |
| — | — | — | — | — | 6.06 |
Reference
Frequently Asked Questions
Common questions about Sb4Se8Tl4, answered from cross-validated data.
What is the band gap of Sb4Se8Tl4?
Sb4Se8Tl4 has a DFT-computed band gap of 0.07–0.83 eV across 9 reported structures.
More questions
Is Sb4Se8Tl4 a metal, semiconductor, or insulator?
With a band gap up to 0.83 eV it is a semiconductor.
Is Sb4Se8Tl4 thermodynamically stable?
Yes — Sb4Se8Tl4 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of Sb4Se8Tl4?
The lowest-energy reported polymorph of Sb4Se8Tl4 is monoclinic symmetry, space group P21/m (No. 11).
What is the density of Sb4Se8Tl4?
The computed density of the ground-state structure of Sb4Se8Tl4 is 6.92 g/cm³.
How many polymorphs of Sb4Se8Tl4 are known?
9 structures of Sb4Se8Tl4 are reported across 3 databases, spanning 6 distinct space groups.
What elements does Sb4Se8Tl4 contain?
Sb4Se8Tl4 contains Sb, Se, and Tl (3 elements).
Where does the data for Sb4Se8Tl4 come from?
Sb4Se8Tl4 data is cross-referenced from materials_project, aflow, omat24.
Explore
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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