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dopant

dopant

1 9.7
People add a small amount of a substance to change a material's electrical properties, for example in computer chips
  • noun
  • /ˈdoʊpənt/
  • Specialized
: dopante
  • The neodymium dopant in the ultrahigh-quality phosphate glass provides the atomic lasing transitions.

And the dopant that's present in bone that Becker found is copper.

Examples

  • The strong localization is associated with the presence of dopant ions.

    Academic text (2006)
  • Photorefractive materials have "foreign" atoms (dopants) hosted in the crystal, with energy levels inside the lattice's "forbidden gap," which is the range of energies not available to electrons in the undoped crystal.

    Academic text (1998)
  • So it's a super valent dopant, supervalent dopant.

  • And the dopant that's present in bone that Becker found is copper.

  • Variation of the Zr/Ti ratio and the addition of dopants permit great variation in the physical properties of these ceramics.

    Academic text (2005)
  • The metal atoms that form the vertices of such structures can be catalysts or dopants that facilitate the capture and release cycle.

    Academic text (2004)
  • Upon illumination, these dopants contribute free charges, which redistribute following the spatial dependence of the optical intensity.

    Academic text (1998)
  • Furthermore, SiO2 is readily etched, enabling it to act as a mask for the diffusion or ion implantation of dopants into the silicon.

    Academic text (1997)
  • The stress levels present in the PECVD films have been found to depend on the hydrocarbon dopants and can be reduced by additions of N2 in the plasma 88, 89.

    Academic text (1996)
  • To improve its electrical conductivity, engineers added a small amount of dopant to the silicon material.

Surface Forms

dopant singular
dopants plural

Morphology

dopant = dope (transparent) = dope + ant

Formed by the verb 'dope' plus the agent/substance-forming suffix '-ant', so the meaning 'a substance used to dope' is directly predictable.

Etymology

Dopant comes from the verb dope, which means 'to add a small amount to change something', and the ending -ant which means 'thing that does'. So a dopant is the small substance added to a material to change its electrical or physical properties.