Bi2Te3
semiconductor· Bi2Te3
Bismuth telluride (Bi₂Te₃) is a narrow-bandgap semiconductor and the most widely used thermoelectric material at room temperature, prized for direct conversion between thermal and electrical energy. It is the material of choice for thermoelectric cooling modules, power generation from waste heat, and temperature sensing applications across industrial, automotive, and consumer electronics sectors. Engineers select Bi₂Te₃ over alternatives because of its superior figure of merit near ambient conditions, established manufacturing processes, and proven reliability in applications requiring precise thermal management without moving parts.
thermoelectric cooling moduleswaste heat power generationtemperature control systemsportable refrigerationthermal sensors and detectorsautomotive climate systems
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 15.29 | GPa | — | ||
| ↳ | 15.01 | GPa | — | ||
| ↳ | 31.42 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 3.729 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Exfoliation Energy(Eexf) | 250.8 | meV/atom | — | ||
Poisson's Ratio(ν)2 entries | 0.2049 | - | — | ||
| ↳ | 0.2500 | - | — | ||
Shear Modulus(G)3 entries | 11.23 | GPa | — | ||
| ↳ | 10.85 | GPa | — | ||
| ↳ | 20.97 | GPa | — |
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 | |
|---|---|---|---|---|---|
Thermal Conductivity(k)2 entries | 4.017 | W/(m·K) | — | ||
| ↳ | 4.017 | W/(m·K) | 27°C |
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 | |
|---|---|---|---|---|---|
Density(ρ) | 7.813 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 0.2500 | eV | — | ||
| ↳ | 0.000 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 115.6 | - | — | ||
Electrical Conductivity(σ) | 2,222.2 | S/cm | 27°C | ||
Electrical Resistivity(ρe) | 0.00000450 | Ω·m | 27°C | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Thermoelectric Power Factor(PF) | 0.00673 | W/(m·K²) | 27°C | ||
Seebeck Coefficient(S)2 entries | -174 | μV/K | 27°C | ||
| ↳ | -180.8 | µV/K | — | ||
Thermoelectric Figure of Merit(zT) | 0.5025 | - | 27°C |
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) | 0.2469 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.1631 | eV/atom | — | ||
| ↳ | 0.00814 | 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.