YP5
YP5 is a stable semiconducting compound formed from yttrium and phosphorus.
About YP5
YP5 is a semiconducting binary compound composed of yttrium and phosphorus. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural configuration within the yttrium-phosphorus chemical space.
Its existence is supported by a significant body of structural data, reflecting its reliability as a material of interest. This stability makes it a compelling candidate for fundamental research into semiconducting phosphides and their potential electronic properties.
Key Properties
Cross-validated computational properties for YP5, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of YP5. 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 YP5, 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. |
|---|---|---|---|---|---|
| — | — | 0.34 | 0.0000 | -0.750 | — |
| P21/m (No. 11) | monoclinic | 0.30 | 0.0000 | -0.606 | — |
| P21/m (No. 11) | monoclinic | 0.14 | 0.0000 | -11.527 | 3.31 |
| P1 (No. 1) | triclinic | — | — | — | 3.99 |
| P1 (No. 1) | triclinic | — | — | — | 3.98 |
| P1 (No. 1) | triclinic | — | — | — | 2.83 |
| Pm (No. 6) | monoclinic | — | — | — | 4.32 |
| P2/m (No. 10) | monoclinic | — | — | — | 3.75 |
| P21/m (No. 11) | monoclinic | — | — | — | 3.36 |
| P21/m (No. 11) | monoclinic | — | — | — | 3.30 |
| P2/m (No. 10) | monoclinic | — | — | — | 3.65 |
| P21/m (No. 11) | monoclinic | — | — | — | 3.33 |
Frequently Asked Questions
Common questions about YP5, answered from cross-validated data.
What is YP5?
YP5 is a stable semiconducting compound formed from yttrium and phosphorus.
What is the band gap of YP5?
Is YP5 a metal, semiconductor, or insulator?
Is YP5 thermodynamically stable?
What is the crystal structure of YP5?
How many polymorphs of YP5 are known?
What elements does YP5 contain?
Where does the data for YP5 come from?
How It Compares
As a distinct binary phosphide, YP5 occupies a unique position in the landscape of yttrium-based materials. It serves as a foundational example of stable phosphorus-rich stoichiometry, providing a benchmark for understanding how yttrium coordinates with phosphorus networks in the solid state.
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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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