A n-channel MOS capacitor has Na = 4×1016 /cm3 and tox = 15 nm. a. The

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A n-channel MOS capacitor has Na = 4×1016 /cm3 and tox = 15 nm. a. The capacitor is biased so that at the surface EF − Ei = ϕFp 2. Find the voltage across the semiconductor (Vs) and across the oxide (Vox). b. Find the electric field in the oxide for the bias condition of part a.

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A n-channel MOS capacitor has $N_{a} = 4 \times 10^{16} / {c m}^{3}$ and $t_{o x} = 15 n m$ . a. The capacitor is biased so that at the surface $E_{F} - E_{i} = \frac{ϕ_{F p}}{2}$ . Find the voltage across the semiconductor $(V_{s})$ and across the oxide $(V_{ox})$ . b. Find the electric field in the oxide for the bias condition of part a.