In an N-type silicon, which of the following statement is true:
Correct answer: C. Holes are minority carriers and pentavalent atoms are the dopants
- A. Electrons are the 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.
Explanation
In N-type silicon, pentavalent atoms such as phosphorus are used as dopants. These atoms have five valence electrons, which means one extra electron is available for conduction. As a result, electrons become the majority carriers, and holes, which are the absence of electrons, become the minority carriers. This is why option C is correct. Option A is incorrect because it mistakenly identifies trivalent atoms as dopants. Option B incorrectly states that electrons are minority carriers. Option D incorrectly asserts that holes are majority carriers and trivalent atoms are dopants, which is characteristic of P-type silicon, not N-type.
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