Physics - Semiconductors Question with Solution | TestHub

When a p-n junction diode is forward biased, the positive terminal of the external voltage source is connected to the p-region and the negative terminal to the n-region.

The applied forward voltage opposes the built-in potential barrier, which reduces the effective barrier voltage.

As a result of the decreased potential barrier, the width of the depletion layer decreases, allowing majority charge carriers to easily cross the junction and conduct electricity.

Answer: width of depletion layer decreases.