Intrinsic & Extrinsic Semiconductors
In the band structure of n-type semiconductor, the free electrons donated by impurity atoms occupy energy levels in
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Answer: (c)
- The fifth electron of a pentavalent donor is loosely bound.
- Its energy level (donor level) lies in the band gap just below the conduction band, so it is easily excited into the conduction band.
- So the answer is (c).