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  2. Intrinsic semiconductor - Wikipedia

    en.wikipedia.org/wiki/Intrinsic_semiconductor

    An intrinsic semiconductor, also called a pure semiconductor, undoped semiconductor or i-type semiconductor, is a semiconductor without any significant dopant species present. The number of charge carriers is therefore determined by the properties of the material itself instead of the amount of impurities.

  3. Extrinsic semiconductor - Wikipedia

    en.wikipedia.org/wiki/Extrinsic_semiconductor

    An extrinsic semiconductor that has been doped with electron donor atoms is called an n-type semiconductor, because the majority of charge carriers in the crystal are negative electrons. An electron acceptor dopant is an atom which accepts an electron from the lattice, creating a vacancy where an electron should be called a hole which can move ...

  4. Doping (semiconductor) - Wikipedia

    en.wikipedia.org/wiki/Doping_(semiconductor)

    Doping of a pure silicon array. Silicon based intrinsic semiconductor becomes extrinsic when impurities such as boron and antimony are introduced.. In semiconductor production, doping is the intentional introduction of impurities into an intrinsic (undoped) semiconductor for the purpose of modulating its electrical, optical and structural properties.

  5. Semiconductor - Wikipedia

    en.wikipedia.org/wiki/Semiconductor

    Silicon based intrinsic semiconductor becomes extrinsic when impurities such as Boron and Antimony are introduced. The conductivity of semiconductors may easily be modified by introducing impurities into their crystal lattice. The process of adding controlled impurities to a semiconductor is known as doping.

  6. Mass action law (electronics) - Wikipedia

    en.wikipedia.org/wiki/Mass_action_law_(electronics)

    In electronics and semiconductor physics, the law of mass action relates the concentrations of free electrons and electron holes under thermal equilibrium.It states that, under thermal equilibrium, the product of the free electron concentration and the free hole concentration is equal to a constant square of intrinsic carrier concentration .

  7. Charge carrier density - Wikipedia

    en.wikipedia.org/wiki/Charge_carrier_density

    The carrier density is important for semiconductors, where it is an important quantity for the process of chemical doping. Using band theory, the electron density, is number of electrons per unit volume in the conduction band. For holes, is the number of holes per unit volume in the valence band.

  8. Carrier lifetime - Wikipedia

    en.wikipedia.org/wiki/Carrier_Lifetime

    In semiconductor lasers, the carrier lifetime is the time it takes an electron before recombining via non-radiative processes in the laser cavity. In the frame of the rate equations model , carrier lifetime is used in the charge conservation equation as the time constant of the exponential decay of carriers.

  9. Electronic band structure - Wikipedia

    en.wikipedia.org/wiki/Electronic_band_structure

    These charge imbalances have electrostatic effects that extend deeply into semiconductors, insulators, and the vacuum (see doping, band bending). Along the same lines, most electronic effects (capacitance, electrical conductance, electric-field screening) involve the physics of electrons passing through surfaces and/or near interfaces.