Question Detail
Question
When silicon is doped with boron, it becomes
Correct Answer
Option C is the correct answer.
Detailed Explanation
Silicon is a tetravalent semiconductor. Boron is a trivalent impurity (acceptor impurity). When silicon is doped with a trivalent impurity like boron, it creates 'holes' as majority charge carriers, making it a P-type semiconductor. The overall material remains electrically neutral.
Hint
Remember the valency of silicon (Group 14) and boron (Group 13) and how it affects charge carriers.