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
electron mobility  measure of electron scattering in semiconductor; proportionality factor between electron drift velocity and electric field as well as between carrier concentration and conductivity of semiconductor; unit cm2/V s; the same way as effective mass of an electron, electron mobility is different for different semiconductors; electron mobility at 300 K for three key semiconductors: Si -1500 cm2/V s, GaAs -7500 cm2/V s, 6H-SiC -400 cm2/V s; higher mobility of charge carriers makes semiconductor better suited for high speed applications.
drift velocity  velocity of charge carriers in semiconductor under the influence of electric field; as opposed to carriers in free space carriers in semiconductor are not "infinitely" accelerated by the electric field because of the scattering, and thus, they reach a finite velocity regardless of the period of time over which the field is acting; at a given electric field drift velocity is determined by the mobility of charge carrier.
hole mobility  parameter which is a measure of hole scattering in a semiconductor; proportionality factor between hole drift velocity and electric field as well as conductivity and hole concentration in semiconductor; due to its higher effective mass, hole mobility is typically significantly lower than electron mobility.
scattering  process responsible for electron in a certain state, defined by its crystal momentum, suddenly moving into a different state; result of interactions with host atoms in the lattice, dopant atoms, as well defects; fundamental effect defining electron transport in semiconductor; in a way scattering can be seen as a "collision" during which species do not come to physical contact.
mobility  important parameter defining transport of free charge carriers in semiconductor, and hence, semiconductor's conductivity; proportionality factor between semiconductor conductivity and concentration of charge carriers; different for different semiconductors due to the difference in the effective nass of charge carriers in different semiconductors; higher for electrons than holes due to lower effective mass.
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Jerzy Ruzyllo is a Distinguished Professor Emeritus in the Department of Electrical Engineering at Penn State University.

This book gives a complete account of semiconductor engineering covering semiconductor properties, semiconductor materials, semiconductor devices and their uses, process technology, fabrication processes, and semiconductor materials and process characterization.

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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.