Sr2Si5N8
Sr2Si5N8 is a thermodynamically stable, wide-gap nitride semiconductor used primarily in the development of high-performance phosphors and optoelectronic materials.
About Sr2Si5N8
Sr2Si5N8 is a robust nitride semiconductor characterized by its wide-gap insulating nature. As a thermodynamically stable phase located on the convex hull, it represents a highly reliable material for structural and electronic integration in demanding environments. Its unique crystalline framework allows for precise tuning of physical properties, making it a subject of significant interest for materials engineering.
This compound is primarily utilized in the development of advanced phosphors and optoelectronic devices. Due to its structural integrity and electronic behavior, it serves as a foundational material for high-performance light-emitting technologies, bridging the gap between traditional nitride semiconductors and specialized insulating applications.
Key Properties
Cross-validated computational properties for Sr2Si5N8, 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.
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 Sr2Si5N8. 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 Sr2Si5N8, 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. |
|---|---|---|---|---|---|
| — | — | 3.41 | 0.0000 | -1.300 | — |
| Pmn21 (No. 31) | orthorhombic | 3.29 | 0.0000 | -1.320 | — |
| Pmn21 (No. 31) | orthorhombic | 3.20 | 0.0000 | -11.232 | 3.90 |
| Pmn21 (No. 31) | orthorhombic | — | — | — | 3.90 |
| Pmn21 (No. 31) | orthorhombic | — | — | — | 7.64 |
Synthesis Routes
Literature-extracted synthesis procedures targeting Sr2Si5N8.
Applications
Where Sr2Si5N8 is used.
Patent Landscape
1 patent reference Sr2Si5N8 or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 9023240 | Silicon nitride powder for siliconnitride phosphor, CaAlSiN3 phosphor using same, Sr2Si5N8 phosphor using same | — | — |
Frequently Asked Questions
Common questions about Sr2Si5N8, answered from cross-validated data.
What is Sr2Si5N8?
Sr2Si5N8 is a thermodynamically stable, wide-gap nitride semiconductor used primarily in the development of high-performance phosphors and optoelectronic materials.
What is Sr2Si5N8 used for?
What is the band gap of Sr2Si5N8?
Is Sr2Si5N8 a metal, semiconductor, or insulator?
Is Sr2Si5N8 thermodynamically stable?
What is the crystal structure of Sr2Si5N8?
How many polymorphs of Sr2Si5N8 are known?
How is Sr2Si5N8 synthesized?
What elements does Sr2Si5N8 contain?
Where does the data for Sr2Si5N8 come from?
How It Compares
Within the nitride semiconductors class.
While members like GaN and AlN are widely recognized for their role in high-frequency power electronics and blue light emission, Sr2Si5N8 occupies a distinct niche as a complex ternary nitride. Unlike the binary nitrides such as BN or InN, this compound offers a more intricate lattice structure that provides unique host-lattice capabilities for luminescence, setting it apart from the simpler binary systems within the broader nitride semiconductor class.
Related Compounds
Other Nitride Semiconductors in the database.
Data sources & attribution
- 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)
- 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)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
Analyze Sr2Si5N8 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →