![]() Essentially a parallel plate capacitor.NMOS p-type substrate, PMOS n-type substrate Oxide (SiO2) Very Thin! University of California, Berkeleyīody (p-type substrate) Accumulation: VGB “Metal” is more commonly a heavily doped polysilicon layer n+ or p+ layer.Sandwich of conductors separated by an insulator.Gate (n+ poly) Body (p-type substrate) MOS Capacitor I-V Curve University of California, Berkeley.
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