An extrinsic semiconductor is one that has been doped; during manufacture of the semiconductor crystal a trace element or chemical called a doping agent has been incorporated chemically into the crystal, for the purpose of giving it different electrical properties than the pure semiconductor crystal, which is called an intrinsic semiconductor. In an extrinsic semiconductor it is these foreign dopant atoms in the crystal lattice that mainly provide the charge carriers which carry electric current through the crystal. The doping agents used are of two types, resulting in two types of extrinsic semiconductor. An electron donor dopant is an atom which, when incorporated in the crystal, releases a mobile conduction electron into the crystal lattice. 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 through the crystal like a positively charged particle. An extrinsic semiconductor which has been doped with electron acceptor atoms is called a p-type semiconductor, because the majority of charge carriers in the crystal are positive holes.
Doping is the key to the extraordinarily wide range of electrical behavior that semiconductors can exhibit, and extrinsic semiconductors are used to make semiconductor electronic devices such as diodes, transistors, integrated circuits, semiconductor lasers, LEDs, and photovoltaic cells. Sophisticated semiconductor fabrication processes like photolithography can implant different dopant elements in different regions of the same semiconductor crystal wafer, creating semiconductor devices on the wafer's surface. For example a common type of transistor, the n-p-n bipolar transistor, consists of an extrinsic semiconductor crystal with two regions of n-type semiconductor, separated by a region of p-type semiconductor, with metal contacts attached to each part.
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An extrinsicsemiconductor is one that has been doped; during manufacture of the semiconductor crystal a trace element or chemical called a doping agent...
and the resulting semiconductors are known as doped or extrinsicsemiconductors. Apart from doping, the conductivity of a semiconductor can be improved...
Look up intrinsic, extrinsic, or innate in Wiktionary, the free dictionary. In science and engineering, an intrinsic property is a property of a specified...
holds, and the semiconductor remains intrinsic, though doped. This means that some conductors are both intrinsic as well as extrinsic but only if n (electron...
be either intrinsic or extrinsic. An intrinsic semiconductor has its own charge carriers and is not an efficient semiconductor (such as silicon is). In...
electrons, n. Then, since n > p, the doped silicon will be a n-type extrinsicsemiconductor. Doping pure silicon with a small amount of boron will increase...
the semiconductor materials studied exhibit a permanent magnetization extrinsic to the semiconductor host material. A lot of the elusive extrinsic ferromagnetism...
cutting edge. It is also useful as an intrinsic semiconductor, as well as an extrinsicsemiconductor upon being doped. In its diamond-like behavior it...
variety. Pure semiconductors that have been altered by the presence of dopants are known as extrinsicsemiconductors (see intrinsic semiconductor). Dopants...
detector material. Tin telluride normally forms p-type semiconductor (Extrinsicsemiconductor) due to tin vacancies and is a low temperature superconductor...
leaves a net positive charge at the hole's location. Holes in a metal or semiconductor crystal lattice can move through the lattice as electrons can, and act...
F391-96 "Standard Test Methods for Minority Carrier Diffusion Length in ExtrinsicSemiconductors by Measurement of Steady-State Surface Photovoltage"...
multi-gate field-effect transistor (MuGFET) refers to a metal–oxide–semiconductor field-effect transistor (MOSFET) that has more than one gate on a single...
density of electrons) in the conduction band increases. In extrinsic (doped) semiconductors, dopant atoms increase the majority charge carrier concentration...
in the various materials. The anomalous Hall effect can be either an extrinsic (disorder-related) effect due to spin-dependent scattering of the charge...
free dictionary. Intrinsics or intrinsic may refer to: Intrinsic and extrinsic properties, in science and engineering Intrinsic muscle, in anatomy Intrinsic...
photoluminescence in many-body systems such as semiconductors. A theoretical approach to handle this is given by the semiconductor luminescence equations. Photoluminescence...
device to go into a saturated emission mode. At the heterojunction (extrinsicsemiconductor layers used as interfaces between two homojunction materials),...
of stacking faults caused by Frank partial dislocations: intrinsic and extrinsic. An intrinsic stacking fault forms by vacancy agglomeration and there...
materials, such as a semiconductor-oxide or semiconductor-metal interface Interfaces between solid and liquid phases. Generally, extrinsic surface states cannot...
telluride is typically ~750 cm−1 as compared to ~50 cm−1 for the extrinsicsemiconductors such as doped silicon. The higher optical coefficient value not...
for a semiconductor device such as a microprocessor. PUFs are often based on unique physical variations occurring naturally during semiconductor manufacturing...
acoustic-mode lattice scattering and ionized-impurity scattering. In extrinsic (doped) semiconductors either the conduction or valence band will dominate transport...
properties of solids. He also distinguished between intrinsic and extrinsicsemiconductors. The concept of excitons is proposed by Yakov Frenkel. John Lennard-Jones...
current (a current of moving spins without charge flow). The original (extrinsic) mechanism devised by Dyakonov and Perel consisted of spin-dependent Mott...
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