Fermi

The Fermi level in an n-type semiconductor at 0 K lies

• below the doner level

• halfway between the conduction band and the doner level

• coincides with intrinsic Fermi level

• True

• False

• True

• False

Tags

NGSS.HS-PS3-1

What is the fermi paradox?

• The Fermi paradox is the belief that extraterrestrial civilizations do not exist

• The Fermi paradox is a term used to describe the uncertainty of quantum mechanics.

• The Fermi paradox refers to the lack of evidence for the Big Bang theory.

• The Fermi paradox is a theory about the existence of parallel universes.

What is the Fermi level in an intrinsic semiconductor?

• At the center of the band gap

• At the top of the valence band

• At the bottom of the conduction band

• Outside the band gap

In a metal, the Fermi level is located:

• At the top of the conduction band

• At the bottom of the valence band

• Within the conduction band

• Within the valence band

The Fermi energy is defined as:

• The energy difference between the highest and lowest occupied states at absolute zero

• The energy of the highest occupied state at absolute zero

• The average energy of electrons in a solid

• The energy required to remove an electron from a solid

Which of the following statements about the Fermi-Dirac distribution is true?

• It applies to bosons

• It describes the distribution of electrons in a metal

• It is used for classical particles

• It is irrelevant at absolute zero

What happens to the Fermi level in a semiconductor as temperature increases?

• It moves closer to the conduction band

• It moves closer to the valence band

• It remains constant

• It moves outside the band gap

The Fermi paradox addresses the question of:

• Why we have not yet detected extraterrestrial life

• Why metals conduct electricity

• Why semiconductors have a band gap

• Why superconductors have zero resistance