TeSe
selenium telluride
Selenium telluride is a binary chalcogenide material that functions as a semiconductor. It is primarily utilized in the development of specialized optical and electronic components due to its unique light-sensitive properties.
SeTe
Overview
Key Properties
Cross-validated computational properties for TeSe, 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.
0.71 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.
140
3 databases, 17 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for TeSe, 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. |
|---|---|---|---|---|---|
| P1 (No. 1) | triclinic | 0.71 | 0.0000 | -19.875 | 5.35 |
| P1 (No. 1) | Triclinic | — | — | — | 6.56 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 6.65 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.09 |
| P21/c (No. 14) | Monoclinic | — | — | — | 7.35 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.42 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.07 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.05 |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.88 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.52 |
| Cmce (No. 64) | Orthorhombic | — | — | — | 5.30 |
| Pm (No. 6) | Monoclinic | — | — | — | 3.42 |
Uses
Applications
Where TeSe is used.
infrared optical devicesphotodetectorssemiconductor research
Reference
Frequently Asked Questions
Common questions about TeSe, answered from cross-validated data.
What is TeSe?
Selenium telluride is a binary chalcogenide material that functions as a semiconductor. It is primarily utilized in the development of specialized optical and electronic components due to its unique light-sensitive properties.
More questions
What is TeSe used for?
TeSe is used in infrared optical devices, photodetectors, and semiconductor research.
What is the band gap of TeSe?
TeSe has a DFT-computed band gap of 0.71 eV across 140 reported structures.
Is TeSe a metal, semiconductor, or insulator?
With a band gap up to 0.71 eV it is a semiconductor.
Is TeSe thermodynamically stable?
Yes — TeSe sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of TeSe?
The lowest-energy reported polymorph of TeSe is triclinic symmetry, space group P1 (No. 1).
What is the density of TeSe?
The computed density of the ground-state structure of TeSe is 5.35 g/cm³.
How many polymorphs of TeSe are known?
140 structures of TeSe are reported across 3 databases, spanning 17 distinct space groups.
What elements does TeSe contain?
TeSe contains Se and Te (2 elements).
Where does the data for TeSe come from?
TeSe data is cross-referenced from materials_project, mpaloe.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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