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In the depletion region of a diode...

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.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
Inside the depletion layer, on one side of junction, there are positive ions and on the other side of it, there are negative ions. These ions are bonded in the crystalline structure and hence can not move. Thus, option (A) is correct.
Inside a depletion layer, as many electrons are freed by breaking of covalent bonds, that many holes are produced. Hence depletion layer is electrically neutral. Hence option (B) is also correct.
Inside a depletion layer, there are positive and negative ions at fixed locations in the crystalline structure. Thus, option (D) is also correct.
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