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\nSolid State Electrical Properties and Band Theory\n

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\nElectrical conductivity varies from metals to insulators. Solids can be divided into three categories: conductors, insulators, and semiconductors. Conductors are solids through which electricity can flow to a large extent, classified as...\nElectrical conductivity varies from metals to insulators. Solids can be divided into three categories: conductors, insulators, and semiconductors. Conductors are solids through which electricity can flow to a large extent, classified as metallic and electrolytic conductors. Electrolytic conductors conduct only when there are mobile ions, while solid states conduct electricity only to a small extent due to defects like holes and electrons. Insulators are solids that almost do not allow electricity to pass through them, such as S,P. Semiconductors are solids whose conductivity lives between metallic conductors and insulators, due to the presence of impurities and defects. Their conductivity increases with temperature as defects increase with temperature. The magnitude of electrical conductivity depends on the number of electrons available to participate in the conductor process. In metals, atomic orbitals form molecular orbitals that form bands, allowing electrons to flow easily under an electric field. In semiconductors, the energy gap between valence band and conduction band is small, allowing some electrons to jump from valence band to conduction band, resulting in some conductivity. In insulators, the difference of energy between valence band and conduction band is so large that electron transition does not occur, resulting in no conductivity\n
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Media Length
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4:56
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Grade
9th - Higher Ed
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Subjects
Science
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Instructional Videos
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Source:
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\nAudio Visual Representation of Chemistry\n\n
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Date
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2024
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Language
English
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For Teacher Use
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Fine Print: Educational Use
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Concepts

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metals, insulators, semiconductors, conductors, holes, electrons, valence electrons, conductivity, atoms, solids, power, substances, electricity
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electrical conductivity, metallic conductors, electrolytic conductors, mobile ions, solid states, defects, s, p, impurities, temperature dependence, atomic orbitals, molecular orbitals, energy gap, valence band, conduction band, electron transition, directly proportional, meter inverse, orbitals combine, band theory, fully filled, band, filled, state, solid, called, generally, classified, ranging, forms
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