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Doping with a trivalent atom gives which type?

AAn n-type
BAn intrinsic
CA conductor
DA p-type
Answer & Solution
Correct answer: D. A p-type
1. A trivalent atom has one electron too few for the bonds. 2. That leaves a vacancy, which acts as a hole. 3. Positive carriers dominate, giving p-type material. 4. So the answer is a p-type. _Source: syllabus Physics, Ch 14 'Semiconductor Electronics'_
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