Question

With interments of reverse bias, the tunnel current also increases because________

(a) electrons move from  balance band of pside to conduction band of nside

(b) fermi level of pside becomes higher than that of nside

(c) junction currrent decreases

(d) unequality of n and p bandedge

This question was posed to me during an interview.

I'm obligated to ask this question of Tunnel Diodes and its Characteristics in chapter Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Answer 1

Correct choice is (a) electrons move from  balance band of pside to conduction band of nside

For explanation I would say: When the forward bias is increased, the tunnel current is also increased upto a certain limit. This happens when the electron movement takes place from P to N side.