Describe working of schottky diode with neat construction

Describe working of schottky diode with neat construction
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Answer :

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Working

The metal region of a 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 regions are injected into the metal region where that gives up their excess energy very rapidly.

Since there are no minority carriers as in conventional diodes, there is no charge storage and hence there is no reverse recovery diode when it is switched from the forward-biased condition (i.e. ON state) to the reverse biased condition (i.e. OFF state).

It has negligible storage time and hence there is a very rapid response to a change in bias. Because of this property, it acts as a very fast switching diode. 

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Answer :

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Applications:

1) RF mixer and Detector Diode.

2) Power Rectifier

3) Voltage Clamping

4) Stand-alone photovoltaic system in order to prevent batteries from discharging purpose for the solar panels at night.

5) Rectifiers in power supplies.

6) Clipping and Clamping circuits.

7) Low Voltage Power Supply Circuits.

8) To rectify very high frequency signals.


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