Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

semiconductor
a material in which electrons in the outermost shell are able to migrate from atom to atom when a modest amount of energy is applied. Such a material is partially conducting (can support electrical current flow), but also has properties of an insulator. The amount of current conduction that can be supported can be varied by "doping" the material with appropriate materials, which results in the increased presence of free electrons for current flow. Common
examples are silicon and GaAs.
See semi-insulator
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