What is the principle and construction working principle of Schottky diode

What is the principle and construction working principle of Schottky diode

With the development of the economy, the electronic components industry is developing rapidly, and components such as diodes and single chips are becoming increasingly mature. And someone asked what Schottky diode is, as well as its principle and structural working principle. Schottky diodes are low-power, high current, and ultra high speed semiconductor components that have emerged in recent years. The principle of its structure still depends on the following content.

Schottky diode principle and structural working principle

The basic principle is to use established Schottky barriers to block reverse voltage at the contact surface between metal (such as lead) and semiconductor (N-type silicon wafer) in Schottky diodes. The rectification efficiency and working principle of Schottky and PN junctions have global differences. Its withstand voltage level is only around 40V. Its strengths are: particularly fast switching efficiency and short reverse recovery time period. Therefore, it can be made into switch diodes and low-voltage high current rectifier diodes.

2. Construction and working principle of Schottky diode: It is a multi semiconductor component made by using precious metals (gold, silver, aluminum, platinum, etc.) A as the positive electrode and N-type semiconductor B as the negative electrode, and utilizing the potential barrier established on the contact surface of the two to achieve rectification performance. Because there are many electronic devices commonly present in N-type semiconductors, precious metals only have a small number of free electrons, so electronic devices diffuse from high content B to low content A. Obviously, there are no holes in metal A, so there will be no diffusion of holes from A to B.

At present, many fields are using Schottky diodes, which are also an indispensable part of electronic components. Schottky diodes not only enhance comprehensive national strength, but also promote the economic sector and further improve the information field, improving people's living standards.