Nb4P2Rb2S20
Nb4P2Rb2S20 is a thermodynamically stable, semiconducting quaternary sulfide material containing niobium, phosphorus, rubidium, and sulfur.
About Nb4P2Rb2S20
Nb4P2Rb2S20 is a complex quaternary sulfide compound composed of niobium, phosphorus, rubidium, and sulfur. As a thermodynamically stable material situated on the convex hull, it represents a well-defined structural arrangement that is highly favorable for synthesis and experimental investigation.
This material exhibits semiconducting electronic character, making it a candidate for research into specialized electronic and optoelectronic applications. Its unique stoichiometry and chemical composition allow it to serve as a distinct building block in the exploration of complex chalcogenide frameworks.
Key Properties
Cross-validated computational properties for Nb4P2Rb2S20, 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.
Reported Structures
Lowest-energy structures reported for Nb4P2Rb2S20, 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. |
|---|---|---|---|---|---|
| Pc (No. 7) | monoclinic | 1.55 | 0.0000 | -5.940 | 2.74 |
| — | — | — | — | — | 2.37 |
| No. 0 | unknown | — | — | — | 1.56 |
Applications
Where Nb4P2Rb2S20 is used.
Patent Landscape
3 patents reference Nb4P2Rb2S20 or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 8248032 | Charging system for prioritizing load consumption in a notebook computer | — | — |
| 8263193 | Vacuum treatment method | — | — |
| 8268035 | Process for producing refractory metal alloy powders | — | — |
Frequently Asked Questions
Common questions about Nb4P2Rb2S20, answered from cross-validated data.
What is Nb4P2Rb2S20?
Nb4P2Rb2S20 is a thermodynamically stable, semiconducting quaternary sulfide material containing niobium, phosphorus, rubidium, and sulfur.
What is Nb4P2Rb2S20 used for?
What is the band gap of Nb4P2Rb2S20?
Is Nb4P2Rb2S20 a metal, semiconductor, or insulator?
Is Nb4P2Rb2S20 thermodynamically stable?
What is the crystal structure of Nb4P2Rb2S20?
What is the density of Nb4P2Rb2S20?
How many polymorphs of Nb4P2Rb2S20 are known?
What elements does Nb4P2Rb2S20 contain?
Where does the data for Nb4P2Rb2S20 come from?
How It Compares
As a unique quaternary sulfide, Nb4P2Rb2S20 stands as a notable example of structural complexity within the broader family of niobium-based chalcogenides. It occupies a distinct niche by integrating alkali metal rubidium with phosphorus and niobium to achieve a stable, semiconducting electronic state.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- 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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