Semiconductor Glossary, Developed Semi OneSource.
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With over 2000 terms defined and explained, Semiconductor Glossary is the most complete reference in the field of semiconductors on the market today.












Including some 500 new terms defined and remaining terms updated and modified, a 2nd edition book version of this glossary is now available.


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Term (Index) Definition
bipolar transistor, BJT  Bipolar Junction Transistor; a transistor consisting of three semiconductor regions (emitter, base, and collector) with alternating conductivity type (i.e. n-p-n or p-n-p); current flow comprises both majority and minority carriers (hence, "bipolar"), is controlled by vertical dimensions; current controlled device; key transistor structure in semiconductor electronics.
base  region in bipolar transistor sandwiched between emitter and collector; typically n-type so that highly mobile electrons act as minority carriers in the base; should be very thin to allow rapid transfer of minority carriers from emitter to collector; electric field is created in the base by nonuniform doping to accelerate minority carriers moving from emitter to collector.
collector  region in bipolar transistor collecting carriers from the base; should be lightly doped to assure proper transistor operation.
emitter  very high conductivity region in semiconductor devices acting as a source of free majority carriers typically injected into the adjacent region (for instance into base in the bipolar transistor)
HBT  Heterojunction Bipolar Transistor; very high-performance transistor structure; unlike conventional bipolar transistor built using more than one semiconductor material, hence "heterojunction"; takes advantage of different bandgap of semiconductors used to form emitter, base and collector; e.g. n-AlGaAs/p-GaAs/n-GaAs, or SiGe in combination with Si; formed using high precision epitaxy such as MBE or MOCVD.
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Created and operated by J. Ruzyllo. Copyright J. Ruzyllo 2001-2016. All rights reserved.

Information in this glossary is provided at the author's discretion. Any liability based on, or related to the contents of this glossary is disclaimed.