Write any three distinctions between p-type and n-type semiconductor.

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Solution

n-type semiconductor p-type semiconductor
(1) Obtained by doping pentavalent
impurity to a pure semiconductor (1) Obtained by doping trivalent impurity to a pure semiconductor.
(2) Majority charge carriers are free electrons (2) Majority charge carriers are holes.
(3) Minority charge carriers are holes (3) Minority charge carriers are free electrons
(4) At $0 K$ free electrons are available for conduction (4) At $0 K$ only holes are available for conduction
(5) Donor energy level is slightly below the bottom of the conduction band. (5) Acceptor energy level is slightly above the top of valence band.

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n-type semiconductor	p-type semiconductor
(1) Obtained by doping pentavalent impurity to a pure semiconductor	(1) Obtained by doping trivalent impurity to a pure semiconductor.
(2) Majority charge carriers are free electrons	(2) Majority charge carriers are holes.
(3) Minority charge carriers are holes	(3) Minority charge carriers are free electrons
(4) At $0 K$ free electrons are available for conduction	(4) At $0 K$ only holes are available for conduction
(5) Donor energy level is slightly below the bottom of the conduction band.	(5) Acceptor energy level is slightly above the top of valence band.