Question
Asked Feb 11, 2020
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In an n-type silicon, which of the following statement is true:
(a) Electrons are majority carriers and trivalent atoms are the dopants.
(b) Electrons are minority carriers and pentavalent atoms are the dopants.
(c) Holes are minority carriers and pentavalent atoms are the dopants.
(d) Holes are majority carriers and trivalent atoms are the dopants.

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Expert Answer

Step 1

The semiconductor is a type of material and its conductivity lies between the conductor and insulator.

 The valence band of semiconductor has 4 electrons.

The conductivity of a pure semiconductor is temperature-dependent and very small.

To enhance the conductivity of semiconductor some impurities are added, and this process is called doping of semiconductor.

Step 2

The semiconductor which we get after adding the pentavalent impurities like phosphorus, arsenic, antimony, bismuth, etc, is called as n-type semiconductor.

The impurity is called a donor because it provides free electrons to the pure semiconductor.

Holes behave as a minority charge carrier in&nbs...

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