Question
In a reverse-biased p-n junction diode, which of the
following occurs as reverse voltage increases?Solution
In a reverse-biased p-n junction diode , the applied reverse voltage pulls electrons and holes away from the junction, increasing the electric field across the depletion region. This leads to the following effects:
- Depletion width increases : More charge carriers are swept away from the junction, widening the depletion region.
- Barrier height increases : The potential barrier becomes harder for carriers to overcome, as the external reverse voltage adds to the built-in potential.
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