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Answer 1

Answer:

Doping semiconductors -

- Doping is the process of adding impurities to intrinsic semiconductors to alter their properties.

- Normally Silicon or Germanium are doped with impurities which increases conc of carriers.

● n-type semiconductor -

- Typical pentavalent (column V) impurity

- Usually Arsenic/Phosphorous

- Majority carrier - electrons

● p-type semiconductor -

- Typical trivalent (column III) impurity

- Usually Boron/Aluminium

- Majority carrier - holes

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Explanation: