Beryllium selenide (BeSe) is a wide-bandgap semiconductor ceramic compound formed from beryllium and selenium, belonging to the II-VI semiconductor family. It is primarily of research and development interest for optoelectronic and high-temperature applications, where its wide bandgap and thermal properties are leveraged; industrial adoption remains limited compared to more mature semiconductors like GaAs or InP, but the material shows promise in UV detectors, high-energy radiation sensing, and specialized photonic devices where its bandgap characteristics offer advantages over conventional alternatives.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 78.40 | GPa | — | ||
Poisson's Ratio(ν) | 0.2200 | - | — | ||
Shear Modulus(G) | 57.12 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Thermal Conductivity(k) | 108 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.234 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 4.000 | eV | — | ||
| ↳ | 2.848 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 7.720 | - | — | ||
| ↳ | 7.750 | - | — | ||
| ↳ | 6.925 range 6.117–7.734median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.1201 | C/m² | — | ||
| ↳ | 0.5933 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -164.3 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.03930 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.8910 | eV/atom | — |