Free-moving particle which carries an electric charge
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In physics, a charge carrier is a particle or quasiparticle that is free to move, carrying an electric charge, especially the particles that carry electric charges in electrical conductors.[1] Examples are electrons, ions and holes. The term is used most commonly in solid state physics.[2] In a conducting medium, an electric field can exert force on these free particles, causing a net motion of the particles through the medium; this is what constitutes an electric current.[3]
The electron and the proton are the elementary charge carriers, each carrying one elementary charge (e), of the same magnitude and opposite sign.
^Dharan, Gokul; Stenhouse, Kailyn; Donev, Jason (May 11, 2018). "Energy Education - Charge carrier". Retrieved April 30, 2021.
^"Charge carrier". The Great Soviet Encyclopedia 3rd Edition. (1970-1979).
^Nave, R. "Microscopic View of Electric Current". Retrieved April 30, 2021.
chargecarrier is a particle or quasiparticle that is free to move, carrying an electric charge, especially the particles that carry electric charges...
Chargecarrier density, also known as carrier concentration, denotes the number of chargecarriers per volume. In SI units, it is measured in m−3. As with...
same crystal, a semiconductor junction is created. The behavior of chargecarriers, which include electrons, ions, and electron holes, at these junctions...
The chargecarrier density in a conductor is equal to the number of mobile chargecarriers (electrons, ions, etc.) per unit volume. The charge density...
space charge region, or space charge layer, is an insulating region within a conductive, doped semiconductor material where the mobile chargecarriers have...
point-like charges. This model typically applies when chargecarriers have been emitted from some region of a solid—the cloud of emitted carriers can form...
hand. Electric current is the flow of electric charge through an object. The most common chargecarriers are the positively charged proton and the negatively...
the net rate of flow of electric charge through a surface.: 2 : 622 The moving particles are called chargecarriers, which may be one of several types...
it contains practically no mobile chargecarriers. It is also known as the space charge region, although space charge extends a bit further in both directions...
since its value depends on the type, number, and properties of the chargecarriers that constitute the current. Wires carrying current in a magnetic field...
with other, already established carriers, generally the incumbent local exchange carrier (ILEC). Local exchange carriers (LECs) are divided into incumbent...
behavior of chargecarriers in N and P-type semiconductor to move heat. Photodiodes All semiconductors are subject to optical chargecarrier generation...
independently moving, nearly-free chargecarriers, the Seebeck coefficient is negative for negatively charged carriers (such as electrons), and positive...
foreign dopant atoms in the crystal lattice that mainly provide the chargecarriers which carry electric current through the crystal. The doping agents...
randomly. Therefore, on average there will be no overall motion of chargecarriers in any particular direction over time. However, when an electric field...
solid-state physics of semiconductors, carrier generation and carrier recombination are processes by which mobile chargecarriers (electrons and electron holes)...
phenomena, light is absorbed, causing excitation of an electron or other chargecarrier to a higher-energy state. The main distinction is that the term photoelectric...
because the thermal energy given to the chargecarrier overcomes the work function of the material. The chargecarriers can be electrons or ions, and in older...
holes as chargecarriers. In contrast, a unipolar transistor, such as a field-effect transistor (FET), uses only one kind of chargecarrier. A bipolar...
transistor may have only one kind of chargecarrier in a field-effect transistor, or may have two kinds of chargecarriers in bipolar junction transistor devices...
effect, two-photon absorption and interactions between photons and free chargecarriers. The presence of nonlinearity is of fundamental importance, as it enables...
affected by these four kinds of processes: charge-carrier generation, charge injection, charge trapping, chargecarrier transport. Hundreds of photoconductive...
the crystal lattice, then there is no generated current due to no net chargecarrier mobility. However, if some electrons transfer from the valence band...
an injection of chargecarriers through the first junction from the emitter into the base region, electrons are the chargecarriers that are transported...
exposed a carrier-free region of immobile, negatively charged acceptor ions (see doping). If VG is high enough, a high concentration of negative charge carriers...
Saturation velocity is the maximum velocity a chargecarrier in a semiconductor, generally an electron, attains in the presence of very high electric fields...
to: Electron, as a free particle Solvated electron Chargecarrier, as carriers of electric charge Valence electron, as an outer shell electron that is...
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