In this biasing , forward current flows due to majority charge carriers . The width of depletion layer decreases .
( iv ) Reverse Biasing In this biasing , the p-side is connected to negative terminal and n-side to positive terminal of a battery .
In this biasing , reverse current flows due to minority charge carriers . The width of depletion layer increases .
A p-n junction diode can be utilized as a rectifier . Zener diode , photo-diode , light-emitting diode , etc are specially designed p-n .
junction diodes . p-n Junction Diode
The current through p-n junction flow only from p toward n and not from n toward p .
The maximum voltage that a junction diode can bear without break is called zener voltage and the junction diodes possessing this voltage is known as zener diode .
Resistance of diode R = V / I