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Semiconductors and Devices

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Questions and Answers

Define intrinsic semiconductors.

Intrinsic semiconductors are materials that have an equal number of electrons in the conduction band and holes in the valence band.

What is the Fermi level in intrinsic semiconductors?

The Fermi level in intrinsic semiconductors lies in the middle of the band gap.

What is the difference between n-type and p-type semiconductors?

In n-type semiconductors, the number of electrons in the conduction band is greater than the number of holes in the valence band. In p-type semiconductors, the number of holes in the valence band is greater than the number of electrons in the conduction band.

What is the role of the Fermi level in determining the probability of occupation of energy levels?

<p>The Fermi level represents the probability of occupation of energy levels in a semiconductor. It determines the distribution of electrons and holes in the conduction and valence bands.</p> Signup and view all the answers

How does the probability of occupation of energy levels differ in n-type and p-type semiconductors?

<p>In n-type semiconductors, the probability of occupation of energy levels by electrons in the conduction band is greater than the probability of occupation of energy levels by holes in the valence band. In p-type semiconductors, the probability of occupation of energy levels by holes in the valence band is greater than the probability of occupation of energy levels by electrons in the conduction band.</p> Signup and view all the answers