With forward bias to a PN junction the width of the depletion layer ________
With forward bias to a PN junction the width of the depletion layer ________
Right Answer is:
Decreases
SOLUTION
With forward bias to a PN junction the width of the depletion layer decreases.
Detailed Explanation
⇒ Whenever a PN junction is forward biased, the holes are repelled by the positive terminal of the voltage source.
⇒ As carriers (holes and electrons) get energy from the external voltage source, some of the holes and electrons are able to enter into the depletion layer and recombination takes place.
⇒ Consequently, the width of the depletion layer decreases as well as the potential barriers (VB at the depletion region is decreased).
⇒ Therefore, more majority carriers diffuse across the junction and a large amount of current will flow through the PN junction. An ideal PN junction has a voltage drop across the crystal.
