p-n junction

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p-n junction (plural p-n junctions)

  1. (physics) An interface between a p-type and n-type semiconductor; used to create junction diodes and junction transistors
    • 2011, Brian Cox & Jeff Forshaw, The Quantum Universe, Allen Lane 2011, p. 168:
      In this way a pn-junction can be used as a diode – it can allow a current to flow, but only in one direction.