Answer :

The depletion layer is formed due to the difference in concentration of the charge carriers between the P and N junctions. The electrons from the N junction diffuse through junction to the P junction and holes form the P junction diffuse to the N junction. This creates a layer of negatively charged immobile ions near the P-N junction in the P crystal and an equal number of positively charged immobile ions in the N crystal near the junction.

This creates a neutral layer due to the equal number of holes and electrons that exist in this region. Also since the charges are on the immobile ions, there are no free mobile charges in this region.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

(a) A student wanPhysics - Board Papers

(i) Explain with Physics - Board Papers

Write the two proPhysics - Board Papers

Name the junctionPhysics - Board Papers

Using a suitable Physics - Exemplar

What do the termsPhysics - Exemplar

<span lang="EN-USPhysics - Exemplar