Pr2Rb2Te8
Pr2Rb2Te8 is a thermodynamically stable semiconducting quaternary telluride containing praseodymium, rubidium, and tellurium.
About Pr2Rb2Te8
Pr2Rb2Te8 is a complex quaternary telluride that sits firmly on the convex hull, indicating significant thermodynamic stability. As a semiconducting material, it offers a unique electronic profile defined by the interplay between the rare-earth praseodymium, alkali rubidium, and chalcogen tellurium elements.
This compound is of interest to researchers investigating novel chalcogenide frameworks. Its structural complexity and stable nature make it a compelling candidate for fundamental studies in solid-state chemistry and materials science, particularly where specific electronic band characteristics are required.
Key Properties
Cross-validated computational properties for Pr2Rb2Te8, 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 Pr2Rb2Te8, 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. |
|---|---|---|---|---|---|
| P4/nbm (No. 125) | tetragonal | 0.19 | 0.0000 | -4.299 | 5.40 |
| — | — | — | — | — | 5.36 |
| P4/nbm (No. 125) | — | — | — | — | — |
Applications
Where Pr2Rb2Te8 is used.
Frequently Asked Questions
Common questions about Pr2Rb2Te8, answered from cross-validated data.
What is Pr2Rb2Te8?
Pr2Rb2Te8 is a thermodynamically stable semiconducting quaternary telluride containing praseodymium, rubidium, and tellurium.
What is Pr2Rb2Te8 used for?
What is the band gap of Pr2Rb2Te8?
Is Pr2Rb2Te8 a metal, semiconductor, or insulator?
Is Pr2Rb2Te8 thermodynamically stable?
What is the crystal structure of Pr2Rb2Te8?
What is the density of Pr2Rb2Te8?
How many polymorphs of Pr2Rb2Te8 are known?
What elements does Pr2Rb2Te8 contain?
Where does the data for Pr2Rb2Te8 come from?
How It Compares
As a quaternary telluride, Pr2Rb2Te8 represents a specialized niche in the broader landscape of rare-earth chalcogenides. While it lacks direct siblings in this specific dataset, it serves as a robust example of how combining rare-earth and alkali metals with tellurium can yield stable, semiconducting architectures that are distinct from simpler binary or ternary systems.
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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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