conduction band
Americannoun
noun
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The electron orbital or orbitals, generally the outermost orbitals, in atoms in a conductor or semiconductor, in which the electrons are free enough to move and thereby carry an electric current.
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Compare valence band See also bandgap
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Excitons form inside semiconductors when electrons absorb energy and jump from their resting state in the valence band to a higher energy state in the conduction band.
From Science Daily ● Jan. 22, 2026
In a solar cell, electrons are dislodged by photons and raised to a higher energy level from the valence band to the conduction band.
From Science Daily ● Jan. 10, 2024
In order to conduct electricity, electrons must move from the filled valence band to the empty conduction band where they can move throughout the solid.
From Textbooks ● Feb. 14, 2019
In an insulator, the band gap is so “large” that very few electrons move into the conduction band; as a result, insulators are poor conductors of electricity.
From Textbooks ● Feb. 14, 2019
Injection of electrons from the dye into the conduction band of the oxide nanoparticles must proceed faster than exciton recombination within the dye.
From Nature ● Aug. 15, 2012
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
