Rationalised 2023-24
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Semiconductor Electronics:
Materials, Devices and
Simple Circuits
semiconductor doped with pentavalent impurity, electrons
become the majority carriers and holes the minority carriers These semiconductors are, therefore, known as n-type
semiconductors For n-type semiconductors, we have,
ne >> nh
(14 3)
(ii)  p-type semiconductor
This is obtained when Si or Ge is doped with a trivalent impurity
like Al, B, In, etc