What are the majority carriers in the base region in an npn transistor called?
Answers
Answer:
hey!
Explanation:
In npn transistor, the left side n-region (emitter) is heavily doped. So the emitter has a large number of free electrons. We know that in p-type semiconductor, holes are the majority charge carriers and free electrons are the minority charge carriers. The p-region (base) is lightly doped.
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Answer:
The majority charge carriers in the base of a npn transistor are holes, whereas the minority charge carriers are electrons.
Explanation:
When a positive bias is given to the base emitter junction of an NPN transistor, the equilibrium between the thermally produced carriers and the repulsive electric field of the n-doped emitter depletion area is disrupted.
This permits thermally excited electrons from the emitter to inject into the base region. These electrons spread through the base from the high concentration zone near the emitter to the low concentration region near the collector.
Because the base is doped p-type, electrons are referred to as minority carriers. Holes are the predominant carrier in the base.
Electrons and holes are electrically charged particles. When the device is biassed, they will become carriers.
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