K2S (potassium sulfide) is an inorganic semiconductor compound belonging to the chalcogenide family, characterized by ionic bonding between potassium cations and sulfide anions. While primarily of research interest rather than established in high-volume production, K2S and related metal sulfides are investigated for optoelectronic and photovoltaic applications due to their semiconductor bandgap properties and potential for thin-film device fabrication. Interest in this material class stems from their lower toxicity profile compared to some cadmium- or lead-based alternatives, though processing challenges and moisture sensitivity have limited commercial deployment.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 3,006.6 | ksi | — | ||
Poisson's Ratio(ν) | 0.3000 | - | — | ||
Shear Modulus(G) | 1,430.1 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.06597 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 2.100 | eV | — | ||
| ↳ | 2.384 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 6.360 | - | — | ||
| ↳ | 5.830 | - | — | ||
| ↳ | 4.662 range 3.162–6.162median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -102.5 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -1.301 | eV/atom | — | ||
| ↳ | -1.222 | eV/atom | — |