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direct-band-gap semiconductor

См. также в других словарях:

  • Band gap — This article is about solid state physics. For voltage control circuitry in electronics, see Bandgap voltage reference. In solid state physics, a band gap, also called an energy gap or bandgap, is an energy range in a solid where no electron… …   Wikipedia

  • Direct and indirect band gaps — In semiconductor physics, the band gap of a semiconductor is always one of two types, a direct band gap or an indirect band gap. The band gap is called direct if the momentum of electrons and holes is the same in both the conduction band and the… …   Wikipedia

  • Semiconductor — Citations missing|date=March 2008A semiconductor is a solid material that has electrical conductivity in between a conductor and an insulator; it can vary over that wide range either permanently or dynamically. [. They are used in many… …   Wikipedia

  • Valence band — In solids, the valence band is the highest range of electron energies where electrons are normally present at absolute zero. In semiconductors and insulators, there is a band gap above the valence band, followed by a conduction band above that.… …   Wikipedia

  • Conduction band — In the solid state physics field of semiconductors and insulators, the conduction band is the range of electron energies, higher than that of the valence band, sufficient to free an electron from binding with its individual atom and allow it to… …   Wikipedia

  • band theory — In chemistry and physics, a theoretical model describing the states of electrons in solid materials, which can have energy values only within certain specific ranges, called bands. Ranges of energy between two allowed bands are called forbidden… …   Universalium

  • Electronic band structure — In solid state physics, the electronic band structure (or simply band structure) of a solid describes ranges of energy that an electron is forbidden or allowed to have. It is due to the diffraction of the quantum mechanical electron waves in the… …   Wikipedia

  • Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …   Wikipedia

  • Intrinsic semiconductor — An intrinsic semiconductor, also called an undoped semiconductor or i type semiconductor, is a pure semiconductor without any significant dopant species present. The number of charge carriers is therefore determined by the properties of the… …   Wikipedia

  • Cadmium sulfide — Chembox new Name = Cadmium sulfide ImageFile = Hawleyite 3D balls.png ImageSize = 150px ImageName = 3D model of the structure of hawleyite ImageFile1 = Greenockite 3D balls.png ImageSize1 = 150px ImageName1 = 3D model of the structure of… …   Wikipedia

  • Gallium(II) telluride — Chembox new Name = Gallium(II) telluride ImageFile = Gallium(II) telluride.jpg ImageName = Gallium(II) telluride OtherNames = gallium telluride Section1 = Chembox Identifiers CASNo = 12024 14 5 Section2 = Chembox Properties Formula = GaTe… …   Wikipedia

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