Silver selenide (Ag₂Se) is a binary compound semiconductor belonging to the silver chalcogenide family, combining metallic silver with the semiconductor element selenium. This material is primarily investigated for thermoelectric applications and infrared optics, where its narrow bandgap and mixed ionic-electronic conduction properties enable energy conversion and thermal sensing. Ag₂Se is notable for phase-transition behavior at elevated temperatures and is considered a promising candidate in thermoelectric research for waste heat recovery systems, though it remains largely experimental compared to mature alternatives like bismuth telluride.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 63.44 | GPa | — | ||
Exfoliation Energy(Eexf) | 194.3 | meV/atom | — | ||
Poisson's Ratio(ν) | 0.3900 | - | — | ||
Shear Modulus(G) | 14.85 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 7.529 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.5040 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 15.56 | - | — | ||
| ↳ | 35.43 | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.02358 | C/m² | — | ||
| ↳ | 0.000 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -133.9 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.02190 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.1503 | eV/atom | — | ||
| ↳ | -0.04310 | eV/atom | — |