What type of impurity is added to pure silicon to get an excess of holes?
A) pentavalent
B) trivalent
C) covalent
D) positive

Name: What type of impurity is added to pure silicon to get an excess of holes? A) pentavalent B) trivalent C) covalent D) positive
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Trivalent impurities such as boron (B) or aluminum (Al) are added to pure silicon to create a p-type semiconductor, where an excess of holes (positively charged carriers) are created.

What Type of Impurity Is Added to Pure Silicon to Get