Te2O5
Te2O5 is a stable binary tellurium oxide that functions as a semiconductor.
About Te2O5
Te2O5 is a distinct tellurium oxide compound characterized by its semiconducting electronic nature. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural arrangement within the tellurium-oxygen system, offering reliable performance for specialized material applications.
Its structural complexity is highlighted by a significant number of reported experimental and theoretical configurations. This diversity in structural data makes it a compelling subject for researchers investigating the interplay between atomic arrangement and electronic behavior in binary oxides.
Key Properties
Cross-validated computational properties for Te2O5, 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 Te2O5. 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 Te2O5, 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. |
|---|---|---|---|---|---|
| — | — | 1.95 | 0.0000 | -1.208 | — |
| P21 (No. 4) | monoclinic | 1.68 | 0.0000 | -5.850 | 5.66 |
| P21 (No. 4) | monoclinic | 1.85 | 0.0008 | -0.989 | — |
| P1 (No. 1) | triclinic | — | — | — | 4.72 |
| P21 (No. 4) | monoclinic | — | — | — | 5.74 |
| P1 (No. 1) | triclinic | — | — | — | 6.45 |
| P1 (No. 1) | triclinic | — | — | — | 5.97 |
| P1 (No. 1) | triclinic | — | — | — | 4.41 |
| P1 (No. 1) | triclinic | — | — | — | 5.91 |
| P-1 (No. 2) | triclinic | — | — | — | 4.46 |
| P-1 (No. 2) | triclinic | — | — | — | 4.68 |
| P-1 (No. 2) | triclinic | — | — | — | 5.01 |
Applications
Where Te2O5 is used.
Frequently Asked Questions
Common questions about Te2O5, answered from cross-validated data.
What is Te2O5?
Te2O5 is a stable binary tellurium oxide that functions as a semiconductor.
What is Te2O5 used for?
What is the band gap of Te2O5?
Is Te2O5 a metal, semiconductor, or insulator?
Is Te2O5 thermodynamically stable?
What is the crystal structure of Te2O5?
What is the density of Te2O5?
How many polymorphs of Te2O5 are known?
What elements does Te2O5 contain?
Where does the data for Te2O5 come from?
How It Compares
As a unique binary oxide, Te2O5 stands as a foundational reference point for tellurium-based materials. Without direct structural siblings in this specific class, it serves as a primary model for understanding the stability and semiconducting characteristics inherent to higher-order tellurium oxides.
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)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (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)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
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