Ga₂BiS₄ is a ternary chalcogenide ceramic compound composed of gallium, bismuth, and sulfur, belonging to the family of wide-bandgap semiconductors and photonic materials. This is primarily a research-phase material investigated for optoelectronic and photovoltaic applications, where its layered crystal structure and electronic properties show promise for infrared detection, nonlinear optical devices, and thin-film solar cells. Engineers consider this material when exploring alternatives to traditional semiconductors in specialized photonic systems where bismuth-based compounds offer advantages in radiation hardness, cost reduction, or tailored optical response compared to conventional III-V or II-VI semiconductors.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 26.98 | GPa | DFT · OptB88vdW | ||
Poisson's Ratio(ν) | 0.2000 | - | DFT · OptB88vdW | ||
Shear Modulus(G) | 20.97 | GPa | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.589 | kg/m³ | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 2.539 | eV | DFT · OptB88vdW | ||
| ↳ | 3.248 | eV | DFT · TBmBJ | ||
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries | 8.275 | - | DFT · OptB88vdW | ||
| ↳ | 6.199 | - | DFT · TBmBJ | ||
Thermoelectric Power Factor(PF)2 entries | 0.000761 | W/(m·K²) | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 0.00102 | W/(m·K²) | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Seebeck Coefficient(S)2 entries | -382.8 | μV/K | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 356.3 | μV/K | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Spectroscopic Limited Maximum Efficiency (SLME)(SLME) | 2.600 | % | DFT · TBmBJ |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | DFT · OptB88vdW | ||
Formation Energy(ΔHf) | -0.6504 | eV/atom | DFT · OptB88vdW |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data