For small forward voltages owing to high carrier concentrations in tunnel diode and due to tunneling effect the forward resistance will be very small.
When the band edge of n-side is same with the Fermi level in p-side the tunnel current is maximum with the further increment in the forward bias the tunnel current decreases and we get the desired negative conduction region.
Essentials of the theory and operation of the tunnel diode, with explanations of how it works and the underlying theory and its characteristics.
1 Tunnel Diodes (Esaki Diode) Tunnel diode is the p-n junction device that exhibits negative resistance. That means when the voltage is increased the current
A Tunnel diode is a heavily doped p-n junction device in which the electric current decreases as the voltage increases.