Question

For intrinsic semiconductors, the Fermi energy is half way between the valence band and the conduction band true or false

Answer 1

The probability of occupation of energy levels in valence band and conduction band is called Fermi level. At absolute zero temperature intrinsic semiconductor acts as perfect insulator. However as the temperature increases free electrons and holes gets generated.

Answer 2

Answer:

An intrinsic semiconductor is an undoped semiconductor which does not have any added impurity; therefore the material involved in the semiconductor determines the charge carrier number.

Ideally, at room temperature, the number of electrons in the conduction is equal to the number of holes in the valence band and is known as the Fermi level.

At absolute zero temperature, the semiconductor can act as an insulator. Talking of the Fermi energy, it occupies the midpoint of the forbidden area between the valence band and the conduction band. Hence the answer is true.

Explanation: