Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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In terms of band theory, what is the difference Between a conductor and a semiconductor - Chemistry

In terms of band theory, what is the difference Between a conductor and a semiconductor

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Solution

In the case of a conductor, the valence band is partially-filled or it overlaps with a higher energy, unoccupied conduction band. So, the electrons can flow easily under an applied electric field.

On the other hand, the valence band of a semiconductor is filled and there is a small gap between the valence band and the next higher conduction band. Therefore, some electrons can jump from the valence band to the conduction band and conduct electricity.

Concept: Solid State - Band Theory of Metals
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APPEARS IN

NCERT Class 12 Chemistry Textbook
Chapter 1 The Solid State
Q 22.2 | Page 32
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