Himabindu said:" Depletion Layer is the region in diode which consists of ions( formed due to formation of octet configuration )of p-type and n-type dopants"
What happens to the ions present in the depletion layer when a diode is biased?
why the depletion layer width changes??
The depletion layer in a pn-junction is a region where there are no free charge carriers due to the diffusion of majority carriers across the junction. This creates a region with a fixed electric field that acts as a barrier to the flow of current.
Bias voltage can either increase or decrease the width of the depletion layer, depending on the polarity. A positive bias voltage will widen the depletion layer in the p-side and narrow it in the n-side, while a negative bias voltage will have the opposite effect.
The width of the depletion layer is primarily influenced by the doping concentrations of the p and n regions, the applied bias voltage, and the physical properties of the semiconductor material such as its dielectric constant and bandgap energy.
The width of the depletion layer plays a crucial role in determining the characteristics of a pn-junction. A wider depletion layer results in a higher breakdown voltage and lower leakage current, while a narrower depletion layer allows for a higher current flow and lower forward voltage drop.
Yes, the width of the depletion layer can be controlled by changing the doping concentrations of the p and n regions or by applying a bias voltage. In some cases, the width can also be adjusted by varying the temperature or using specialized techniques such as ion implantation.