Bi₂Te₂S is a layered chalcogenide ceramic compound combining bismuth, tellurium, and sulfur—a derivative of the well-established Bi₂Te₃ thermoelectric family. This material is primarily investigated in thermoelectric and energy harvesting research, where the partial sulfur substitution for tellurium is engineered to tune electronic and phononic properties for improved performance in waste heat recovery systems. The layered crystal structure makes it a candidate for exfoliation into 2D nanosheets, positioning it at the intersection of bulk thermoelectrics and emerging van der Waals materials for advanced thermal management and solid-state cooling applications.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Exfoliation Energy(Eexf) | 67.68 | meV/atom | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.2606 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.3040 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 85.97 | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -97.97 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.3221 | eV/atom | — |