Which material is used for pn junction?
The p-n junction diode is made from the semiconductor materials such as silicon, germanium, and gallium arsenide. For designing the diodes, silicon is more preferred over germanium.
Why pn junction is called junction?
Why is p-n-junction is also called a junction diode? Solution : A p-n-junction allows a large current to flow through it when forward biased and it offers a high resistance when reverse biased. The unidirectional property is similar to that of vacuum diode. Hence, p-n-junction is also called a junction diode.
What is the principle of pn junction?
Working Principle of PN Junction Diode An electric field with a direction from a positive charge to a negative charge develops on either side of the junction. The electric potential between P and N-regions changes when an external potential is supplied to the PN junction terminals.
What is the other name of pn junction?
The resulting electronic device that has been made is commonly called a PN junction Diode or simply Signal Diode.
Which is symbol of PN junction diode?
The symbol for a p-n junction diode is a triangle pointing to a line. Where the triangle is pointing is showing you which way the diode will let current flow. This one is allowing current to flow from right to left with the right side being the positive side.
Why pn junction is important?
The PN junction has the very useful property that electrons are only able to flow in one direction. As current consists of a flow of electrons, this means that current is allowed to flow only in one direction across the structure, but it is stopped from flowing in the other direction across the junction.
What are the properties of pn junction?
It can rectify electric current, inject minority carriers, create a potential barrier, make use of its capacitance properties, accumulate space charge, create various non-linear current—voltage characteristics, transform light energy into electrical, react to various kinds of irradiation, emit light radiation when a …