Depletion Region Effect
Mediumphysics
Depletion region width increases primarily under?
Select the correct option:
Solution
Incorrect! Answer:
Reverse bias
- Reverse Bias Connection: Positive terminal to N-region, Negative terminal to P-region.
- Carrier Motion: The external field pulls electrons in the N-side further away from the junction (toward the positive terminal) and holes in the P-side further away (toward the negative terminal).
- Space Charge Growth: This leaves behind more uncovered immobile ions (positive on N-side, negative on P-side).
- Width Change: The immobile ionized region, i.e., the depletion region, becomes wider.
- Impact: A wider depletion layer creates a stronger barrier, preventing charge carrier flow (except for a tiny leakage current).
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About This Question
- Subject
- physics
- Chapter
- semiconductor devices
- Topic
- depletion region effect
- Difficulty
- Medium
- Year
- 2025
This medium difficulty physics question is from the chapter semiconductor devices, covering the topic of depletion region effect. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of semiconductor devices concepts.
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