Practicing Success
What is the dominant mechanism for motion of charge carriers in forward and reverse biased silicon p-n junction diode respectively? |
drift, diffusion diffusion, drift diffusion, diffusion drift, drift |
diffusion, drift |
When a diode is forward biased, the barrier potential decreases and eventually becomes zero whereas in reverse biased the barrier potential keeps on increasing which restricts the flow of majority charge carriers. Hence, the dominant mechanism is diffusion in forward bias and drift in reverse bias. |