The GATE Grind

GATE 2023 EC – Question 16

Electronic Devices · Energy Bands and Carrier Concentration · 1 mark · Multiple choice

In a semiconductor, if the Fermi energy level lies in the conduction band, then the semiconductor is known as

  1. degenerate n-type.
  2. degenerate p-type.
  3. non-degenerate n-type.
  4. non-degenerate p-type.

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Show answer and explanation

Correct answer: (A) degenerate n-type.

Explanation

A Fermi level inside the conduction band means very heavy donor doping: the semiconductor is degenerate and n-type.