The pn junction diode is the basic semiconductor diode format. A p n junction diode is a two terminal device that allows electric current in one direction and blocks electric current in another direction.
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Pn junction diode are used in many application like.
P n junction diode is used as what. However unlike a resistor a diode does not behave linearly with respect to the applied voltage as the diode has an exponential current voltage. Negative charges electrons can easily flow through the junction from n to p but not from p to n and the reverse is true for holes. A p n junction diode is formed by doping one side of a piece of silicon with a p type dopant boran and the other side with a n type dopant phosphorusge can be used instead of silicon.
A pn junction diode is a semiconductor device with two opposite region such as p type region and n type region. Pn junction diodes are mostly used for rectification alternative current to pulsating dc. A pn junction diode allows electric charges to flow in one direction but not in the opposite direction.
In forward bias condition the diode allows electric current whereas in reverse bias condition the diode does not allow electric current. The p n junction diode is a two terminal device. If the diode is forward biased it allows the electric current flow.
The p region is called as the anode and is connected to a positive terminal of a battery and it has holes in majority carrier and electrons in minority carrier. The forward bias and the reverse bias properties of the pn junction imply that it can be used as a diode. Impurities are added to it to create a region on one side that contains negative charge carriers electrons called an n type semiconductor and a region on the other side that contains positive charge carriers holes called a p type semiconductor.
A p n junction diode is two terminal or two electrode semiconductor device which allows the electric current in only one direction while blocks the electric current in opposite or reverse direction. It is used for many forms of rectification for current levels both large and small as well as high and low voltage levels and it finds many uses in all manner of electronic circuits. Pn junction diode is a diode which can be used as a rectifier logic gate voltage stabiliser switching device voltage dependent capacitor and in optoelectronics as a photodiode light emitting diode led laser diode photo detector or solar cell in electronics.
They are used as clipper to clip the portion of ac. They are used as clamper to change the reference voltage. A pn junction diode is one of the simplest semiconductor devices around and which has the characteristic of passing current in only one direction only.
They are used as switches in many electronic circuitry. A pn junction diode is made of a crystal of semiconductor usually silicon but germanium and gallium arsenide are also used.
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