Saved Bookmarks
| 1. |
What is depletion barrier? |
|
Answer» Solution :DUE to diffusion of charge carriers in p-n JUNCTION, the number of electron decreases in the n-section and the number of electron in p-section increases so that potential difference across junction is developed. The polarity of this potential is such as to oppose further flow of carriers so that a condition of EQUILIBRIUM exists.  Figure shows the p-n junction at equilibrium and the potential across the junction. The n-material has lost electrons and p-materialshas acquired electrons. This potential tends to prevent the movement of electron from the n-REGION into p-region it is called a barrier potential. This barrier is obtained in the depletion region, hence it is also called depletion barrier. |
|