The depletion layer in the P-N junction regio | vedclass

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Question

(B) When a $P-N$ junction is formed,there is a high concentration of electrons in the $N$-region and a high concentration of holes in the $P$-region.D

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Diffusion of charge carriers

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(B) When a $P-N$ junction is formed,there is a high concentration of electrons in the $N$-region and a high concentration of holes in the $P$-region.Due to this concentration gradient,electrons diffuse from the $N$-side to the $P$-side,and holes diffuse from the $P$-side to the $N$-side.As these charge carriers cross the junction,they recombine near the interface,leaving behind immobile ionized impurity atoms.This region,depleted of mobile charge carriers,is known as the depletion layer.

The depletion layer in the $P-N$ junction region is caused by

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