What is the current in a Schottky diode due to?

The current across a metal-semiconductor junction is mainly due to majority carriers. Three distinctly different mechanisms exist: diffusion of carriers from the semiconductor into the metal, thermionic emission of carriers across the Schottky barrier and quantum-mechanical tunneling through the barrier.

What is meant by Schottky junction?

Schottky diode is a metal-semiconductor junction diode that has less forward voltage drop than the P-N junction diode and can be used in high-speed switching applications.

What is the purpose of a Schottky diode?

Compared to p-n diodes, a Schottky diode provides lower voltage drop across the diode at low reverse bias. Some applications of Schottky diodes include rectifiers in switching regulators, discharge protection in power electronics, and rectifying circuits requiring high switching rate.

What is the important characteristics of Schottky diode?

Following are the advantages of Schottky diode: The capacitance of the diode is low as the depletion region of the diode is negligible. The reverse recovery time of the diode is very fast, that is the change from ON to OFF state is fast. The current density of the diode is high as the depletion region is negligible.

What kind of Junction is a Schottky junction?

When the metal compound and N-type semiconductor are combined, they create a Metal- Semiconductor junction. This junction is known as Schottky Barrier. Width of the Schottky barrier depends upon the type of metal and semiconductor materials that are used in junction formation.

What’s the difference between a PN junction and a Schottky diode?

PN- Junction diode has a Semiconductor- Semiconductor junction. While Schottky diode has metal- Semiconductor junction. PN- Junction diode have large voltage drop. The Schottky diode has a small voltage drop. High On state losses. Low On state losses. Slow switching Speed. Fast switching speed.

What is the result of a schottky contact?

The bias does not change the barrier height from the metal side.The result of this is a Schottky Barrier (rectifying contact), where the junction conducts for one bias polarity, but not the other.

Is the Schottky junction solar cell cost effective?

Although vulnerable to higher rates of thermionic emission, manufacturing of Schottky barrier solar cells proves to be cost-effective and industrially scalable.