Energy band theory in solids - Electronics, Physics - eSaral

Hey, do you want to learn about the Energy band theory in solids? If yes. Then you are at the right place.

Energy Bands in solid

Valence band:

The electrons in the outermost shells are not strongly bonded to their nuclei, these electrons are valence electrons. The band formed by these electrons is called the valence band.

Conduction band:

Valence electrons are loosely attached to the nucleus. Even at ordinary temperature, some of the valence electrons left the valence band. These are called free electrons and also called conduction electrons. The band occupied by these electrons is called the conduction band.

Forbidden energy gap ($\Delta$Eg.):

The separation between the conduction band and valence band is known as the forbidden energy gap.

$\Delta \mathrm{Eg} .=(\mathrm{CB})_{\mathrm{Min}}-(\mathrm{VB})_{\mathrm{Max}}$

So, that's all from this article. I hope you get the idea about the Energy band theory in solids. If you found this article informative then please share it with your friends.

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