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  • In the depletion region of a diode A. there are no mobile charges B. equal number of holes and electrons exist, making the region neutral. C. recombination of holes and electrons has taken place. D. immobile charged ions exist.

In the depletion region of a diode
A. there are no mobile charges
B. equal number of holes and electrons exist, making the region neutral.
C. recombination of holes and electrons has taken place.
D. immobile charged ions exist.

Answers (1)

The correct answer is the option a, b and d

Explanation:-

The concentration of charge carriers in the N-region and P-region is different. Therefore, due to diffusion, the neutrality of both p-type and n-type semiconductors is disturbed. Hence, a layer of negatively charged ions appears at the p junction while positive ions at a junction in N-crystal.

The thickness of the layer (depletion) is 1 micron = 10-6 m.

Width of depletion layer ∞  1/Dopping

The depletion layer is directly proportional to the temperature.

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