Ga1Se2Sr1
Strontium gallium selenide is a ternary semiconductor material that belongs to the chalcogenide family. It is primarily investigated for its potential in optoelectronic devices and as a host material for luminescent applications.
GaSeSr
Overview
Key Properties
Cross-validated computational properties for Ga1Se2Sr1, aggregated across 2 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.
1.80 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)
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
26
2 databases, 15 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for Ga1Se2Sr1, 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. |
|---|---|---|---|---|---|
| Cccm (No. 66) | orthorhombic | 1.80 | 0.0000 | -14.839 | 4.81 |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
Uses
Applications
Where Ga1Se2Sr1 is used.
Optoelectronics researchLuminescent material developmentSemiconductor device studies
Reference
Frequently Asked Questions
Common questions about Ga1Se2Sr1, answered from cross-validated data.
What is Ga1Se2Sr1?
Strontium gallium selenide is a ternary semiconductor material that belongs to the chalcogenide family. It is primarily investigated for its potential in optoelectronic devices and as a host material for luminescent applications.
What is Ga1Se2Sr1 used for?
Ga1Se2Sr1 is used in optoelectronics research, luminescent material development, and semiconductor device studies.
What is the band gap of Ga1Se2Sr1?
Ga1Se2Sr1 has a DFT-computed band gap of 1.80 eV across 26 reported structures.
Is Ga1Se2Sr1 a metal, semiconductor, or insulator?
With a band gap up to 1.80 eV it is a semiconductor.
Is Ga1Se2Sr1 thermodynamically stable?
Yes — Ga1Se2Sr1 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of Ga1Se2Sr1?
The lowest-energy reported polymorph of Ga1Se2Sr1 is orthorhombic symmetry, space group Cccm (No. 66).
What is the density of Ga1Se2Sr1?
The computed density of the ground-state structure of Ga1Se2Sr1 is 4.81 g/cm³.
How many polymorphs of Ga1Se2Sr1 are known?
26 structures of Ga1Se2Sr1 are reported across 2 databases, spanning 15 distinct space groups.
What elements does Ga1Se2Sr1 contain?
Ga1Se2Sr1 contains Ga, Se, and Sr (3 elements).
Where does the data for Ga1Se2Sr1 come from?
Ga1Se2Sr1 data is cross-referenced from materials_project, aflow.
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).
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