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p-type semiconductor is doped with:

APentavalent
BPure Si
CTrivalent atom (B, Al, Ga) — acceptor
DNo doping
Answer & Solution
Correct answer: C. Trivalent atom (B, Al, Ga) — acceptor
Trivalent dopants create hole (missing one electron in covalent bond). **Majority carriers:** holes. Minority: electrons. Acceptor level just above VB.
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