The reverse current through a semi conductor diode is due to:
Correct answer: D. Minority carriers
- A. Electrons
- B. Holes
- C. Majority carriers
- D. Minority carriers
Explanation
The less abundant charge carriers are called minority carriers; in n-type semiconductors they are holes, while in p-type semiconductors they are electrons. In an intrinsic semiconductor, which does not contain any impurity, the concentrations of both types of carriers are ideally equal.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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