For extrinsic semiconductors;


For extrinsic semiconductors; when doping level is increased;

  1. Fermi-level of p-type semiconductor will go upward and Fermi-level of n-type semiconductors will go downward.

  2. Fermi-level of p-type semiconductors will go downward and Fermi-level of n-type semiconductor will go upward.

  3. Fermi-level of both p-type and n-type semiconductros will go upward for $T>T_{F}$ $K$ and downward for $T

  4. Fermi-level of $p$ and n-type semiconductors will not be affected.

Correct Option: , 2


(2) conceptual

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