Question

distinguish between p type and n type semiconductor​

Answer 1

In a p-type semiconductor, the III group element of the periodic table is added as a doping element, whereas in n-type the V group element is the doping element. In a p-type semiconductor, the majority carriers are holes, and minority carriers are electrons.

Answer 2

Answer:

Difference Between p-Type and n-Type Semiconductor

In a p-type semiconductor, the III group element of the periodic table is added as a doping element, whereas in n-type the V group element is the doping element.

Trivalent impurity like Aluminium, Gallium and Indium is added in the p-type semiconductor, while in n-type semiconductor Pentavalent impurity like Arsenic, Antimony, Phosphorus, Bismuth, etc. are added.

The impurity added in p-type semiconductor provides extra holes known as Acceptor atom, whereas in n-type semiconductor impurity provides extra electrons and termed as Donor atom.

In a p-type semiconductor, the majority carriers are holes, and minority carriers are electrons. In the n-type semiconductor, electrons are majority carriers, and holes are minority carriers.

The electron density is much greater than the hole density in the n-type semiconductor denoted as ne >> nh whereas, in p-type semiconductor the hole density is much greater than the electron density nh >> ne.

In a n-type semiconductor, the donor energy level is close to the conduction band and away from the valence band. In the p-type semiconductor, the acceptor energy level is close to the valence band and away from the conduction band.

The Fermi level of the n-type semiconductor lies between donor energy

level and the conduction band while the Fermi level of the p-type semiconductor lies between the acceptor energy level and the valence band.

Majority carriers move from higher to lower potential in p-type whereas, in n-type, the majority carriers move from lower to the higher potential.

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