conduction band

In semiconductors and insulators, the conduction band is the range of electron energy, higher than that of the valence band, sufficient to make the electrons free to accelerate under the influence of an applied electric field and thus constitute an electric current. Semiconductors may cross this conduction band when they are excited.
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1. In a semiconductor, the range of electron energy, higher than that of the valence band, sufficient to make the electrons free to move from atom to atom under the influence of an applied electric field and thus constitute an electric current. 2. In the atomic structure of a material, a partially filled or empty energy level in which electrons are free to move, thus allowing the material to conduct an electrical current upon application of an electric field by means of an applied voltage.

a group of energy states that are empty at zero degrees kelvin and are available to support the movement of electrons that gain sufficient energy to jump from the valence band to empty levels in the conduction band.

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