Define Semiconductor Diode And Give Some Examples Of It.
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Solution
Semiconductor diodes can be defined as diodes that are made up of semiconducting materials (typically, the metals silicon and germanium are used in them)
In these diodes, the negatively charged cathode contains a large number of electrons, which is placed adjacent to the anode, which carries an excess of positively charged holes.
Common examples of semiconductor diodes include the p-n junction diode and the Zener diode.
A p-n junction diode is formed when a p-type semiconductor (having an excess of holes) is brought into close contact with an n-type semiconductor(having an excess of electrons).
The junction between the cathode and the anode in a semiconductor diode features the formation of a depletion region, which does not contain electrons or holes.
When positive voltages exist at the anode, the depletion region becomes extremely small and the current begins flowing through the semiconductor diode.
