Ignore poly depletion effects and inversion charge

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Unformatted text preview: oly depletion effects and inversion charge thickness effects. C Cmax Cmin Vfb Cdep = εs Wdep ,max Wdep ,max Cmin = 1.5 = 0 = 2.12 × 10−7 F cm 2 φB = kT ⎛ N A ⎞ ln ⎜ ⎟ = 0.46V q ⎝ ni ⎠ 2 ⋅11.7 ⋅ 8.854 × 10−14 F ⋅ 2 ⋅ 0.46V 2ε s 2φB cm = = = 4.88 ×10−6 cm = 48.8nm qN a 1.6 × 10−19 C ⋅ 5 × 1017 cm −3 Cdep Cox Cmax = Cox Cdep + Cox Cmax Cdep + Cox C = = 1 + ox Cmin Cdep Cdep Cox = 0.5Cdep = 1.06 ×10−7 F Tox = Vg(V) Vt 3.9 ⋅ 8.854 ×10−14 F −7 1.06 × 10 F cm 2 cm = 3.26 ×10−6 cm = 32.6nm cm 2 (b) [5pts] Assume the fixed oxide charge density at the p-...
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