Se2Sr2
Se2Sr2 is a thermodynamically stable strontium selenide semiconductor characterized by a diverse range of known structural configurations.
About Se2Sr2
Se2Sr2 is a thermodynamically stable compound composed of strontium and selenium. As a member of the selenide family, it exhibits semiconducting electronic characteristics that make it an intriguing subject for solid-state research. Its position on the convex hull indicates a high degree of structural stability under standard conditions.
With numerous reported structures across multiple databases, this material is a well-documented subject for computational and experimental studies. Its electronic nature suggests potential utility in specialized electronic or optoelectronic applications where stable, semiconducting chalcogenide frameworks are required.
Key Properties
Cross-validated computational properties for Se2Sr2, aggregated across 5 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 Se2Sr2, 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. |
|---|---|---|---|---|---|
| Fm-3m (No. 225) | cubic | 2.23 | 0.0000 | -17.081 | 4.47 |
| Fm-3m (No. 225) | — | 2.01 | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P63/mmc (No. 194) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| I41/amd (No. 141) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
| Immm (No. 71) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
Applications
Where Se2Sr2 is used.
Frequently Asked Questions
Common questions about Se2Sr2, answered from cross-validated data.
What is Se2Sr2?
Se2Sr2 is a thermodynamically stable strontium selenide semiconductor characterized by a diverse range of known structural configurations.
What is Se2Sr2 used for?
What is the band gap of Se2Sr2?
Is Se2Sr2 a metal, semiconductor, or insulator?
Is Se2Sr2 thermodynamically stable?
What is the crystal structure of Se2Sr2?
What is the density of Se2Sr2?
How many polymorphs of Se2Sr2 are known?
What elements does Se2Sr2 contain?
Where does the data for Se2Sr2 come from?
How It Compares
As a stable binary selenide, Se2Sr2 serves as a foundational example of strontium-based chalcogenide chemistry. It represents a robust structural baseline for exploring the electronic properties of alkaline-earth metal selenides, providing a stable reference point for understanding the behavior of similar binary systems.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- 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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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