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Structure
 

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Metal-oxide-semiconductor Structure




When a voltage is applied across a MOS structure, it modifies the distribution of charges in the semiconductor. If we consider a P-type semiconductor (with N_A the density of holes), a positive V_{GB} (see figure) tends to reduce the concentration of holes and increase the concentration of electrons. If V_{GB} is high enough, the concentration of negative charge carriers is more than that of positive charges.


OPERATING PRINCIPLE



Flat-Band conditions



Accumulation



Depletion



Inversion



NON-IDEALITIES



APPLICATIONS



REFERENCES AND NOTES