Q. 14.3( 34 Votes )
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.
In an n-type silicon holes are minority carriers and pentavalent
atoms are the dopants as it is formed by doping of a pentavalent atom in a tetravalent crystal.
Pentavalent atoms have an excess electron than a tetravalent atom, hence a number of holes are less than the number of electrons. So, holes are the minority carriers.
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