For extrinsic semiconductors; when doping level is increased;

Question

For extrinsic semiconductors; when doping level is increased; (A) Fermi-level of p-type semiconductor will go upward and Fermi-level of n -type semiconductors will go downward. (B) Fermi-level of p-type semiconductors will go downward and Fermi-level of n -type semiconductor will go upward. (C) Fermi-level of both p-type and n-type semiconductors will go upward for T > T F K and downward for T < T F K , where T F is Fermi temperature. (D) Fermi-level of p and n-type semiconductors will not be affected.

Tardigrade Admin · Accepted Answer

Correct answer is (b) Fermi-level of p-type semiconductors will go downward and Fermi-level of n -type semiconductor will go upward.

Q. For extrinsic semiconductors; when doping level is increased;

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

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

Fermi-level of both p-type and n-type semiconductors will go upward for $T > T_{F}$ $K$ and downward for $T < T_{F} K,$ where $T_{F}$ is Fermi temperature.

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

Correct answer is (b) Fermi-level of $p$ -type semiconductors will go downward and Fermi-level of $n$ -type semiconductor will go upward.