The depletion layer in the p-n junction region is caused by:
Correct answer: A. Diffusion of carriers
- A. Diffusion of carriers
- B. Drift of electrons
- C. Drift of holes
- D. Migration of impurity ions
Explanation
Just after the formation of junction. The free electrons from the n-region diffused into the p-region and holes from p-region diffused into the n-region. As a result of this diffusion, charge less region formed around the junction in which charge carrier are not present. The formation of junction is mainly due to the diffusion of charges.
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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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