The Schottky diode, also known as the Schottky barrier diode (SBD), derives its name from its inventor, Dr Schottky. Unlike a PN junction diode, created by combining P-type and N-type semiconductors, the SBD is formed by a metal-semiconductor junction that relies on contact between metal and semiconductor. It is sometimes referred to as a metal-semiconductor diode or a surface barrier diode and is known for its ability to generate hot carriers.