The Dopant reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Dopant

A dopant is an impurity that is added in small amounts to a pure substance to change its properties.

Examples

• Boron, arsenic, and antimony, among other substances, are used as dopants when added to a pure semiconductor material to alter its electrical characteristics.

• Artificially produced gemstones (such as Ruby (gemstone)) usually contain a dopant to identify them as such.

Also called: Dope, Doping Agent

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