Question Detail
Question
When silicon is doped with boron, it becomes a(n):
Correct Answer
Option C is the correct answer.
Detailed Explanation
Silicon is a group 14 element (tetravalent). Boron is a group 13 element (trivalent). When silicon is doped with a trivalent impurity like boron, it creates 'holes' (electron deficiencies) in the crystal lattice, leading to a P-type semiconductor.
Hint
Consider the valency of silicon (group 14) and boron (group 13).