In a PN junction, what is the region called where no charge carriers are present? (2019)
Practice Questions
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Q1
In a PN junction, what is the region called where no charge carriers are present? (2019)
Depletion region
Conduction band
Valence band
Neutral zone
The depletion region is the area around the PN junction where no free charge carriers are present.
Questions & Step-by-step Solutions
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Q
Q: In a PN junction, what is the region called where no charge carriers are present? (2019)
Solution: The depletion region is the area around the PN junction where no free charge carriers are present.
Steps: 4
Step 1: Understand what a PN junction is. A PN junction is formed when a P-type semiconductor (which has positive charge carriers) is joined with an N-type semiconductor (which has negative charge carriers).
Step 2: Recognize that when the P-type and N-type materials are joined, some charge carriers (electrons and holes) move across the junction.
Step 3: Identify that as these charge carriers move, they leave behind an area that has no free charge carriers.
Step 4: This area with no free charge carriers is called the depletion region.
