Working principle of Schottky diode

The metal region of schottky diode is heavily occupied with the conduction band electrons and the N type region is lightly doped. There are no minority carriers as in other types of diodes, but there are only majority carriers as electrons. It operates only with majority carriers. When it is forward biased, higher energy electrons in the N region are injected into the metal region where they give up their excess energy very rapidly. Since, there are no minority carriers as in conventional diodes hence there is no charge storage and therefore there is no reverse recovery diode when it is switched from the forward biased condition to the reverse biased condition. It has negligible storage time and hence there is a very rapid response to a change in the bias. Because of this property, it acts as a very fast switching diode.

 

forward biased schottky diode

        forward biased schottky diode

Leave a Reply

Your email address will not be published. Required fields are marked *