Bi2O3

Name: Bi2O3
Brand: MatWorld

semiconductor

· Bi2O3

Bismuth oxide (Bi₂O₃) is a semiconducting ceramic compound widely employed in optoelectronic and photocatalytic applications, particularly in visible-light-responsive systems where its narrow bandgap makes it suitable for light absorption and charge generation. In industry, it serves as a key material in photocatalysts for water purification and pollutant degradation, in optical coatings, and as a dopant or active phase in advanced ceramics and thin-film devices. Engineers select Bi₂O₃ over traditional wide-bandgap semiconductors when visible-light sensitivity and relatively high density are advantageous, though its stability and performance typically benefit from structural modification or composite integration to enhance photocatalytic efficiency and reduce recombination losses.

photocatalysis and water treatmentvisible-light optoelectronicsthin-film semiconductorsoptical coatingsenvironmental remediation catalystssensing devices

Compliance & Regulations

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

Units:

si imperial

Filter by

Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	7,902.6	ksi	DFT
↳	10,574.7	ksi	DFT · OptB88vdW
↳	7,785.2	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.8900	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Exfoliation Energy(Eexf)	221.4	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)2 entries	0.3000	-	DFT · OptB88vdW
↳	0.2640	-	DFT · PBE
Shear Modulus(G)3 entries	4,333.2	ksi	DFT
↳	5,159	ksi	DFT · OptB88vdW
↳	4,367.1	ksi	DFT · PBE

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)	0.2980	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)4 entries	2.860	eV	Measured
↳	0.000	eV	DFT · PBE
↳	2.189	eV	DFT · OptB88vdW
↳	3.398	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	42.19	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.083	-	DFT · OptB88vdW
↳	5.123	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.8833	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.897	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00193	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00105	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-245.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	319.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	1.720	%	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

Filter by

Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.2604	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)3 entries	-0.8140	eV/atom	DFT
↳	-1.103	eV/atom	DFT · OptB88vdW
↳	-1.183	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.

Bi2O3 — Properties & Data | MatWorld

Bi2O3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control