An n-type and a p-type silicon semiconductor can be obtained by doping pure silicon with

An n-type and a p-type silicon semiconductor can be obtained by doping pure silicon with
  1. Boron and arsenic respectively.
  2. arsenic and boron respectively.
  3. sodium and magnesium respectively.
  4. indium and sodium respectively.

Solution

Since p-type semiconductor has holes as majority charge carriers, thus for obtaining a p-type semiconductor we have to dope pure silicon with acceptor elements of group III-A like aluminium, boron, gallium etc. And n-type semiconductor has electrons as majority charge carriers, thus for obtaining a n-type semiconductor silicon should be doped with electron rich donor elements of V A group like phosphorous, arsenic, etc.

Asked in: MHT CET 2022 (06 Aug Shift 1)

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