Nb2O5

Name: Nb2O5
Brand: MatWorld

semiconductor

· Nb2O5

Niobium pentoxide (Nb2O5) is a refractory ceramic oxide semiconductor belonging to the transition metal oxide family, valued for its high melting point, chemical stability, and semiconducting properties. It is primarily used in optical coatings, photocatalytic applications, and as a component in advanced ceramics and glass formulations, where its ability to enhance refractive index and thermal stability makes it preferable to more common alternatives. The material is also gaining traction in emerging applications such as energy storage devices and photocatalytic water treatment, where its semiconducting band structure enables charge carrier separation.

optical coatings and thin filmsphotocatalytic devicesrefractory ceramicselectrochromic displayshigh-temperature structural compositesenvironmental remediation

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	20,119.5	ksi	DFT
↳	21,130.5	ksi	DFT · OptB88vdW
Exfoliation Energy(Eexf)	245.4	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.4500	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	7,080.1	ksi	DFT
↳	8,346.9	ksi	DFT · OptB88vdW

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1993	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	3.080	eV	Measured
↳	2.566	eV	DFT · OptB88vdW
↳	3.043	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	40.48	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.937	-	DFT · OptB88vdW
↳	5.847	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	1.030	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00160	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000884	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-367.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	369	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	4.130	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.3218	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-2.396	eV/atom	DFT · OptB88vdW
↳	-2.812	eV/atom	Measured

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Nb2O5 — Properties & Data | MatWorld

Nb2O5

Mechanical Properties

Physical Properties

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Environmental

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