How can you explain a depletion region?

How can you explain a depletion region?

The word depletion in English refers to the decrease in the quantity of something. Similarly, in semiconductors, the depletion region is the layer where the flow of charges decreases. This region acts as the barrier that opposes the flow of electrons from the n-side to the p-side of the semiconductor diode.

What is depletion layer and how it is formed?

The depletion region is caused by the diffusion of charges. The holes and the electrons diffusing towards each other combine near the junction. In doing so positive and negative ions are formed. The pair of positive and negative ions at the junction forms the dipole.

Why is the depletion layer important?

The depletion layer at the interface between a compact semiconductor and a liquid medium plays an important role in light-induced charge separation. The local electrostatic field present in the space charge layer serves to separate the electron–hole pairs generated by illumination of the semiconductor.

What do you mean by depletion layer in P-N junction diode?

Depletion region or depletion layer is a region in a P-N junction diode where no mobile charge carriers are present. Depletion layer acts like a barrier that opposes the flow of electrons from n-side and holes from p-side.

What is the depletion layer in P-N junction?

This space-charge region on either side of the junction together is known as the depletion region as the electrons and holes taking part in the initial movement across the junction depleted the region of its free charges.

What is depletion layer in diode?

What is meant by depletion layer and barrier potential?

The depletion region is the space charge region on either side of the junction, which got depleted of free charges. The potential difference developed across the junction and opposes the diffusion of charge and brings equilibrium condition is known as the potential barrier.

What do you understand by depletion region at P-N junction?

What is depletion layer physics?

In semiconductor physics, the depletion region, also called depletion layer, depletion zone, junction region, space charge region or space charge layer, is an insulating region within a conductive, doped semiconductor material where the mobile charge carriers have been diffused away, or have been forced away by an …

What is the formula for calculating depletion?

The formula to calculate cost depletion for the income statement is investment cost plus development costs less salvage value, divided by the estimated number of units of the specified resource, multiplied by the number of units sold during the period.

How depletion layer is formed in a PN junction?

Explain the formation of depletion region in p-n junction. When a p-n junctio is formed, some free electrons from the n-type semiconductor cross the junction and fill the vacant space in the p-type junction. This vacant space which was initially a hole, once filled with the electron, the incomplete bond with a neighbouring silicon atom of the impurity atom is completed.

Why depletion region in PN junction is called depletion region?

The only elements left in the depletion region are ionized donor or acceptor impurities. The depletion region is so named because it is formed from a conducting region by removal of all free charge carriers , leaving none to carry a current.

What is depletion layer of a p-n junction?

Depletion region or depletion layer is a region in a P-N junction diode where no mobile charge carriers are present. Depletion layer acts like a barrier that opposes the flow of electrons from n-side and holes from p-side.