If a p-n junction is forward biased, then what is the direction of diffusion and drift current across the junction? |
Diffusion - from n to p side, Drift - from p to n side Diffusion - from p to n side, Drift - from n to p side Diffusion - from n to p side, Drift - from n to p side Diffusion - from p to n side, Drift - from p to n side |
Diffusion - from p to n side, Drift - from n to p side |
The correct answer is Option (2) → Diffusion - from p to n side, Drift - from n to p side $\text{Forward bias: majority carriers dominate}$ $\text{Electrons diffuse: } n \rightarrow p$ $\text{Holes diffuse: } p \rightarrow n$ $\text{Conventional current due to diffusion (holes)}: p \rightarrow n$ $\text{Drift current (minority carriers)}: n \rightarrow p$ Diffusion - from p to n side, Drift - from n to p side. |