RbSb
RbSb is a thermodynamically stable semiconducting compound formed from rubidium and antimony.
About RbSb
RbSb is a binary inorganic compound composed of rubidium and antimony. As a thermodynamically stable material residing on the convex hull, it represents a robust phase within its chemical system, making it a subject of significant interest for structural analysis and materials characterization.
This compound exhibits semiconducting electronic properties, positioning it as a candidate for specialized electronic and optoelectronic applications. With extensive documentation across multiple databases, it serves as a key reference point for researchers investigating the interplay between alkali metals and pnictogens.
Key Properties
Cross-validated computational properties for RbSb, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of RbSb. 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 RbSb, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 0.71 | 0.0000 | -0.507 | — |
| — | — | 0.70 | 0.0000 | -0.433 | — |
| P21/c (No. 14) | monoclinic | 0.64 | 0.0000 | -3.070 | 4.01 |
| — | — | 0.82 | 0.0006 | -0.433 | — |
| P212121 (No. 19) | orthorhombic | 0.54 | 0.0010 | -3.069 | 3.96 |
| P212121 (No. 19) | orthorhombic | 0.61 | 0.0040 | -0.503 | — |
| — | — | 0.00 | 0.1479 | -0.286 | — |
| — | — | 0.00 | 0.2649 | -0.169 | — |
| P-6m2 (No. 187) | hexagonal | 0.00 | 0.3224 | -0.185 | — |
| — | — | 0.00 | 0.3937 | -0.040 | — |
| — | — | 0.00 | 0.3962 | -0.037 | — |
| — | — | 0.00 | 0.4607 | 0.027 | — |
Applications
Where RbSb is used.
Frequently Asked Questions
Common questions about RbSb, answered from cross-validated data.
What is RbSb?
RbSb is a thermodynamically stable semiconducting compound formed from rubidium and antimony.
What is RbSb used for?
What is the band gap of RbSb?
Is RbSb a metal, semiconductor, or insulator?
Is RbSb thermodynamically stable?
What is the crystal structure of RbSb?
What is the density of RbSb?
How many polymorphs of RbSb are known?
What elements does RbSb contain?
Where does the data for RbSb come from?
How It Compares
As a stable binary phase, RbSb occupies a distinct position in the landscape of rubidium-antimony materials. Its thermodynamic stability and well-characterized structural profile provide a reliable baseline for understanding the broader behavior of alkali-antimonide systems.
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)
- 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)
- 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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
Analyze RbSb in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →