The depletion layer in $\mathrm{p}-\mathrm{n}$ junction region is caused by
The depletion layer in $\mathrm{p}-\mathrm{n}$ junction region is caused by
drift of electrons.
migration of impurity ions.
diffusion of charge carries.
drift of holes.
Solution
The correct option is C diffusion of charge carriers
Due to the large concentration of electrons in N -side and holes in P -side, they diffuses from their own side to other side when giving biasing. Hence depletion region produces.