Question

Briefly explain the two important processes that occur during the formation of a p-n junction.

Hint:

Remember the sequence of events during the formation of a p-n junction: \[ \text{Diffusion} \rightarrow \text{Formation of depletion layer} \rightarrow \text{Electric field} \rightarrow \text{Drift} \rightarrow \text{Equilibrium} \] At equilibrium, \[ \boxed{ I_{\text{diffusion}} = I_{\text{drift}} } \] and the net current through the junction is zero.

Answer 1