Answer: p-type semiconductor.
- A n-type semiconductor
- B p-type semiconductor
- C intrinsic semiconductor
- D an insulator
Correct answer: B. p-type semiconductor
Explanation: A trivalent dopant creates holes (acceptor levels), giving a p-type semiconductor in which holes are the majority carriers.
Conductors have overlapping bands, semiconductors have a small energy gap that can be bridged by heat or doping, and insulators have a large gap that blocks conduction.
Concept context
Band theory, p-n junction, diodes, transistors, logic gates, and integrated circuits.