Main Page | See live article | Alphabetical index 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. See also: Semiconductor for a full explanation of the band structure of materials. Electrical conduction for more information about conduction in solids, and another description of band structure. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.