SrS
strontium sulfide · strontium monosulfide
Strontium sulfide is a stable semiconducting compound frequently utilized in the development of phosphors and optoelectronic devices.
About strontium sulfide
Strontium sulfide is a thermodynamically stable inorganic compound that functions as a semiconductor. Its robust structural integrity and electronic characteristics make it a subject of significant interest in materials science research. The material is widely recognized for its high degree of data richness, with numerous structural configurations documented in scientific databases. This extensive characterization underscores its importance in developing functional materials for various technological sectors.
Key Properties
Cross-validated computational properties for strontium sulfide, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of SrS. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for SrS, 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 | 2.54 | 0.0000 | -2.364 | — |
| Fm-3m (No. 225) | cubic | 2.54 | 0.0000 | -2.364 | — |
| Fm-3m (No. 225) | cubic | 2.50 | 0.0000 | -14.015 | 3.59 |
| — | — | 2.59 | 0.0001 | -2.295 | — |
| — | — | 2.58 | 0.0002 | -2.295 | — |
| — | — | 2.56 | 0.0004 | -2.295 | — |
| — | — | 3.11 | 0.1220 | -2.173 | — |
| — | — | 2.66 | 0.1419 | -2.153 | — |
| — | — | 2.56 | 0.1766 | -2.119 | — |
| — | — | 0.00 | 0.1805 | -2.115 | — |
| — | — | 2.85 | 0.2048 | -2.090 | — |
| — | — | 2.92 | 0.2049 | -2.090 | — |
Synthesis Routes
Literature-extracted synthesis procedures targeting SrS.
Applications
Where strontium sulfide is used.
Frequently Asked Questions
Common questions about strontium sulfide, answered from cross-validated data.
What is SrS?
Strontium sulfide is a stable semiconducting compound frequently utilized in the development of phosphors and optoelectronic devices.
What is SrS used for?
What is the band gap of SrS?
Is SrS a metal, semiconductor, or insulator?
Is SrS thermodynamically stable?
What is the crystal structure of SrS?
How many polymorphs of SrS are known?
How is SrS synthesized?
What elements does SrS contain?
Where does the data for SrS come from?
How It Compares
As a prominent member of the alkaline earth chalcogenide family, strontium sulfide serves as a fundamental reference point for understanding the electronic and structural behavior of this class of materials.
Data sources & attribution
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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