☑ Diode Work Function

Zener diode breakdown voltages can range from 2 to 200 v. It decreases and increasing temperature doping concentration in n type semiconductor.

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Schottky diode is a function of temperature dropping.

Diode work function. The process of adding impurities is called doping. The work function of a metal is greater than the work function of a semiconductor. One of the primary characteristics of a schottky barrier is the schottky barrier height denoted by f b see figure.

Therefore the electrons in the n type semiconductor have high potential energy than the electrons in the metal. Broadly speaking a semiconductor is a material with a varying ability to conduct electrical current. Schottky barrier height dependence on the metal work function for p type si schottky diodes guven cankayaa and nazim ucarb a gaziosmanpasa university faculty of sciences and arts physics department tokat turkey b suleyman demirel university faculty of sciences and arts physics department isparta turkey reprint requests to prof.

A diode is defined as a two terminal electronic component that only conducts current in one direction so long as it is operated within a specified voltage level. Most semiconductors are made of a poor conductor that has had impurities atoms of another material added to it. Alternator diodes perform three critical functions for the automotive charging system.

For manufacturing purposes the metals of the schottky barrier diode like molybdenum platinum chromium tungsten aluminium gold etc are used and the semiconductor used is n type. As such the diode can be viewed as an electronic version of a check valve. Zener diodes are created to operate optimally when they are reverse biased and instead of being destroyed will conduct electricity under conditions where normal a diodes breakdown voltages are reached.

Because of this electrical property diodes are used to convert alternating current electrical energy into direct current electrical energy. Schottky is a potential energy barrier for electrons formed at a metalsemiconductor junction. In an automotive electrical system diodes can be found in several places including the alternator.

Schottky diode is also known as schottky barrier diode surface barrier diode majority carrier device hot electron diode or hot carrier diode. A schottky barrier named after walter h. An ideal diode will have zero resistance in one direction and infinite resistance in the reverse direction.

A diode is the simplest sort of semiconductor device. The most common function of a diode is to allow an electric current to pass in one direction called the diodes forward direction while blocking it in the opposite direction the reverse direction. Schottky barriers have rectifying characteristics suitable for use as a diode.