Semiconductor Band Gap Energy (Eg(Si) ≈ 1.1 eV, Eg(Ge) ≈ 0.7 eV)
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Eg(Si) ≈ 1.1 eV, Eg(Ge) ≈ 0.7 eV
What each symbol means
| Symbol | What it stands for |
|---|---|
| Ge | Germanium |
| Si | Silicon |
| E_g | Energy gap between valence band and conduction band (eV) |
When to use this
Eg determines semiconductor behavior. Si is more common (wider gap → works at higher temperatures). Ge has lower Eg → more intrinsic carriers at room T → higher leakage current. Insulator: Eg > 3 eV. Conductor: Eg ≈ 0.