alleryA pentavalent dopant gives one extra electron for conduction, so it is called a:
AHole maker
BInsulator
CDonor atom
DAcceptor atom
Answer & Solution
Correct answer: C. Donor atom
1. Four electrons bond, the fifth is loosely held.
2. It is donated to the crystal for conduction.
3. So the dopant is a donor.
_Source: syllabus Physics Part II, Chapter 14, Semiconductor Electronics._
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