What is Depletion layer?
A region near a PN junction boundary that contains almost no carriers. It widens under reverse bias.
Field: PN junctions and diodes
Depletion layer in the explanations
Polysilicon is a semiconductor, so gate bias forms a depletion layer of about 0.3–0.5 nm on the gate-electrode side.
What problem results from depletion of the polysilicon on t…
Questions that mention Depletion layer (4)
- What happens to the width of the depletion layer when the reverse bias applied to a PN junction is increased?
- In a PN junction where the p side is far more heavily doped than the n side (a p+n junction), how does the depletion layer spread?
- Which statement correctly describes the depletion layer of a PN junction in thermal equilibrium?
- What problem results from depletion of the polysilicon on the gate electrode side of a polysilicon gate?
Related terms
Built-in potential Junction capacitance (depletion capacitance) Numerical aperture (NA) Acceptor Donor Avalanche breakdown Conductivity modulation Diffusion capacitance Forward bias Ideality factor