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Вопрос 283

What is the name given to an impurity atom that adds holes to a semiconductor crystal structure?

  1. Insulator impurity
  2. N-type impurity
  3. Acceptor impurityПравильный ответ
  4. Donor impurity

Объяснение

A trivalent atom such as boron has one fewer valence electron than the silicon atom it replaces, so it accepts an electron from a neighboring bond and leaves a hole behind; dopants that behave this way are called acceptors. Donor impurities do the opposite by contributing free electrons, and the other two names are not used for dopant atoms.

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Вопрос 283: What is the name given to an impurity atom that adds holes… · FCC Amateur Extra Class (Element 4) · Questena