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Examples ofvalence band
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Electrons in thevalencebandoccupy a range of lower energy states, and are relatively immobile.
From theCambridge English Corpus
A silicon atom has four electrons in thevalenceband; phosphorus has five such electrons, and boron three.
From theCambridge English Corpus
Additionally, the effective mass of holes in thevalencebandis changed to more closely match that of electrons in the conduction band.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Including and, this kind of semiconducting titanates, the conduction band has mainly titanium 3d character and thevalencebandoxygen 2p character.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The band diagram typically indicates the variation in thevalencebandand conduction band edges versus some spatial dimension, often denoted "x".
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This example is from Wikipedia and may be reused under a CC BY-SA license.In other words, donor impurities create states near the conduction band while acceptors create states near thevalenceband.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Then, the density of free carriers in the conduction and/or thevalencebandwill increase.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Note that interband transition is the transition between the conduction andvalenceband.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Many copper chalcogenides are degenerate p-type semiconductors with relatively large numbers of holes in theirvalenceband.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In many metals, however, the bands are neither electron-like nor hole-like, and often just calledvalencebandas they are made of valence orbitals.
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This example is from Wikipedia and may be reused under a CC BY-SA license.This is also applicable for electrons in thevalenceband(often understood in terms of holes).
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This example is from Wikipedia and may be reused under a CC BY-SA license.The removed electrons are drawn from thevalencebandlevels, leaving vacancies or "holes" in thevalenceband.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In an intrinsic semiconductor the number of electrons in the conduction band is equal to the number of holes in thevalenceband.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The ionizing radiation produces electron-hole pairs - electrons are in the conduction band and holes in thevalenceband.
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This example is from Wikipedia and may be reused under a CC BY-SA license.For example, in a semiconductor the minimum photon energy would actually correspond to thevalencebandedge rather than work function.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Most materials that conduct heat well have avalencebandof free electrons which serve to transfer the heat.
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This example is from Wikipedia and may be reused under a CC BY-SA license.If an otherwise-almost-fullvalencebandhas a state "without" an electron in it, we say that this state is occupied by a hole.
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This example is from Wikipedia and may be reused under a CC BY-SA license.So electrons near the top of thevalencebandbehave like they have negative mass.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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