Schottky barrier diode

A Schottky barrier diode, also known as a hot carrier diode, is a type of semiconductor diode formed by the junction of a semiconductor and a metal. The name "Schottky diode" is derived from the German physicist Walter H. Schottky. It has a low forward voltage drop and very high switching speed. The cat's whisker detector, used in early radio and metal rectifier applications, is considered a prototype of the Schottky diode. When a sufficient forward voltage is applied, current flows in the forward direction. While the standard forward voltage of a silicon p-n diode is 600 to 700 mV, that of a Schottky diode ranges from 150 to 450 mV. The lower forward voltage requirement of the Schottky diode enables faster switching speeds and improved system efficiency.