Problem

The diagram shows the energy bands of a tunnel diode as the potential difference is increa...

The diagram shows the energy bands of a tunnel diode as the potential difference is increased. In this device, high-impurity atom density causes the occupied donor and unoccupied acceptor levels to spread into impurity bands, which overlap, respectively, the n-type conduction and the p-type valence bands. In all unbiased diodes, the depiction zone between the n-type and p-type bands constitutes a potential barrier (see Section 6.2), but in the tunnel diode, it is so thin that significant tunneling occurs. The current versus voltage plot shows that unlike a normal diode, significant current begins to flow as soon as there is an applied voltage—before the bias voltage is Egaple. It then decreases (so-called negative resistance), before again increasing in the normal way. Explain this behavior.

Step-by-Step Solution

Request Professional Solution

Request Solution!

We need at least 10 more requests to produce the solution.

0 / 10 have requested this problem solution

The more requests, the faster the answer.

Request! (Login Required)


All students who have requested the solution will be notified once they are available.
Add your Solution
Textbook Solutions and Answers Search