Tb2O3
semiconductor· Tb2O3
Terbium oxide (Tb₂O₃) is a rare-earth ceramic compound that functions as a wide-bandgap semiconductor, belonging to the lanthanide oxide family. It is primarily investigated for optoelectronic and photonic applications, including phosphors for display technologies, scintillator materials for radiation detection, and potential optical waveguide substrates. Engineers select this material for specialized high-performance applications where rare-earth elements' unique electronic and luminescent properties provide advantages over conventional semiconductors, though it remains less common in mainstream manufacturing than yttrium or cerium oxides due to cost and supply constraints.
rare-earth phosphors and displaysscintillator detectorsoptical and photonic componentsradiation detection systemshigh-temperature ceramicsresearch optoelectronics
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 115.9 | GPa | — | ||
Poisson's Ratio(ν) | 0.3200 | - | — | ||
Shear Modulus(G) | 51.96 | GPa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 7.587 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 3.000 | eV | — | ||
| ↳ | 1.476 | eV | — | ||
| ↳ | 1.608 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 19.44 | - | — | ||
Magnetic Moment(μB)2 entries | 0.000 | μB | — | ||
| ↳ | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -223.8 | µV/K | — |
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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.2605 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | -2.616 | eV/atom | — | ||
| ↳ | -3.866 | eV/atom | — | ||
| ↳ | -3.543 | eV/atom | — |
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.
Verified Unverified Low confidence (<80%) Link to source
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.