Na6Ge2Se7 is an inorganic ceramic compound belonging to the sodium germanium selenide family, synthesized primarily for research and advanced material applications rather than established commercial production. This material is of interest in solid-state chemistry and materials science for its ionic-conducting and optical properties, positioning it within the broader category of chalcogenide ceramics that show promise for next-generation energy storage, sensing, and photonic devices. While not yet widely deployed in industry, compounds in this family are being investigated as potential solid electrolytes, optical windows, and infrared-transparent ceramics where their selenide chemistry offers advantages over traditional oxide or sulfide alternatives.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 3.493 | kg/m³ | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 1.551 | eV | DFT · OptB88vdW | ||
| ↳ | 2.655 | eV | DFT · TBmBJ | ||
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries | 6.013 | - | DFT · OptB88vdW | ||
| ↳ | 4.452 | - | DFT · TBmBJ | ||
Thermoelectric Power Factor(PF)2 entries | 0.000286 | W/(m·K²) | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 0.000315 | W/(m·K²) | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Seebeck Coefficient(S)2 entries | -91.84 | μV/K | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 346.7 | μV/K | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Spectroscopic Limited Maximum Efficiency (SLME)(SLME) | 9.650 | % | DFT · TBmBJ |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | DFT · OptB88vdW | ||
Formation Energy(ΔHf) | -0.8856 | 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