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When donor type impurity is added to a semiconductor material

When donor type impurity is added to a semiconductor material Correct Answer electrons are generated and material is N-type

CONCEPT:

  • The process of deliberate addition of a desirable Impurity to a pure semiconductor so as to increase its conductivity is called doping.
  • The impurity atoms added are called dopants and semiconductors doped with the impurity atoms are called extrinsic or doped semiconductors.

EXPLANATION:

  • The elements whose atom has five valance electrons are called pentavalent impurities e.g. As, P, Sb, etc.
  • These impurities are also called donor impurities because they donate an extra free electron.
  • The semiconductor material with majority carriers as electrons is called n-type semiconductor. Therefore option 1 is correct.

Related Questions

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