1. Varactor Diode
  2. PN Diode
  3. Schottky Diode
  4. LED
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1 Answers

Option 3 : Schottky Diode

In a unipolar device current is due to only one type of carriers (i.e. electrons or holes), while in bipolar device current is due to both holes and electrons.

Schottky diode or hot-carrier diode is a junction of n-type semiconductor and metal, in it electrons are sole carriers.
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