RbTe
RbTe is a stable semiconducting material formed from rubidium and tellurium that is widely documented in structural databases.
About RbTe
RbTe is a binary semiconducting compound composed of rubidium and tellurium. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of these elements that remains a subject of interest in solid-state chemistry.
The material is characterized by a high degree of structural diversity, with numerous reported configurations across multiple databases. This extensive data availability makes it a significant subject for researchers investigating the interplay between alkali metals and chalcogens in semiconductor physics.
Key Properties
Cross-validated computational properties for RbTe, 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 RbTe. 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 RbTe, 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. |
|---|---|---|---|---|---|
| Pbam (No. 55) | orthorhombic | 0.86 | 0.0000 | -0.935 | — |
| Pbam (No. 55) | orthorhombic | 0.83 | 0.0000 | -3.111 | 4.39 |
| — | — | 0.58 | 0.0000 | -0.847 | — |
| P-62m (No. 189) | hexagonal | 0.44 | 0.0004 | -3.110 | 3.65 |
| — | — | 0.00 | 0.0214 | -0.825 | — |
| — | — | 0.96 | 0.0260 | -0.821 | — |
| P-62m (No. 189) | hexagonal | 0.44 | 0.0352 | -0.900 | — |
| — | — | 0.00 | 0.1749 | -0.672 | — |
| — | — | 0.00 | 0.2980 | -0.549 | — |
| P-6m2 (No. 187) | hexagonal | 0.00 | 0.3103 | -0.625 | — |
| — | — | 0.00 | 0.3625 | -0.484 | — |
| — | — | 0.00 | 0.3639 | -0.483 | — |
Applications
Where RbTe is used.
Frequently Asked Questions
Common questions about RbTe, answered from cross-validated data.
What is RbTe?
RbTe is a stable semiconducting material formed from rubidium and tellurium that is widely documented in structural databases.
What is RbTe used for?
What is the band gap of RbTe?
Is RbTe a metal, semiconductor, or insulator?
Is RbTe thermodynamically stable?
What is the crystal structure of RbTe?
How many polymorphs of RbTe are known?
What elements does RbTe contain?
Where does the data for RbTe come from?
How It Compares
As a distinct binary phase, RbTe serves as a foundational example of alkali-telluride chemistry, providing a stable reference point for understanding the electronic and structural trends within this specific chemical family.
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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