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.
... Of the total population of 26450, 13112 are male, and 13338 are female. The population density of the community is 18 inhabitants per km².
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