dopant

[doh-puhnt]

noun

Electronics.

1. an impurity added intentionally in a very small, controlled amount to a pure semiconductor to change its electrical properties.

   Arsenic is a dopant for silicon.

dopant

/ ˈdəʊpənt /

noun

1. an element or compound used to dope a semiconductor

Word History and Origins

Origin of dopant¹

First recorded in 1960–65; dope + -ant

Word History and Origins

Origin of dopant¹

C20: see _dope , _-ant

Example Sentences

By the donor doping of large W6+, this material can take up more water to increase its proton concentration, as well as reduce the proton trapping through electrostatic repulsion between the dopant and proton.

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"A major problem with the conventional proton conductors is a phenomenon known as proton trapping, in which protons are trapped by acceptor dopant via electrostatic attraction between the dopant and proton," explains Yashima.

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As for proton trapping, the high positive charge of the W6+ dopant leads to a stronger repulsion with protons, which are also positively charged.

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The repulsion indicates reduced proton trapping by the W6+ dopant, which leads to the high proton conductivity at low and intermediate temperatures.

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"The stabilization of perovskites with disordered intrinsic oxygen vacancies and full hydration enabled by doping of large donor dopant could be an effective strategy towards next-generation proton conductors," remarks Yashima.

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