Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
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.
Answer
Holes are minority carriers and pentavalent atoms are the dopants.
Explanation
Solution
In an n-type silicon, the electrons are the majority carriers, while the holes are the minority carriers. An n-type semiconductor is obtained when pentavalent atoms, such as phosphorus, are doped in silicon atoms.
Therefore, the correct statement is (c).