Ncert Exercises & Solutions

14.1 In an n-type silicon, which of the following statement is true:

(1) Electrons are majority carriers and trivalent atoms are the dopants.

(2) Electrons are minority carriers and pentavalent atoms are the dopants.

(3) Holes are minority carriers and pentavalent atoms are the dopants.

(4) Holes are majority carriers and trivalent atoms are the dopants.

Hint: Recall the n-type semiconductors.
Step 1: Check each option one by one.
An n-type semiconductor has electrons as majority carriers and holes as minority carriers. It is formed when we dope pentavalent impurity in the Silicon atom. Some pentavalent dopants are phosphorus, arsenic, and bismuth.

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