Question:
A semiconductor diode is forward biased. The depletion layer width will:
A semiconductor diode is forward biased. The depletion layer width will:
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Forward bias decreases barrier potential, while reverse bias increases it.
Updated On: May 25, 2026
- Increase
- Become zero immediately
- Decrease
- Remain unchanged
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The Correct Option is C
Solution and Explanation
Concept:
In forward bias:
Step 1: Understand depletion region. The depletion layer contains immobile ions and acts as a barrier to charge flow.
Step 2: Effect of forward bias. Forward bias opposes the built-in electric field. Hence barrier potential decreases. Therefore depletion layer thickness decreases.
Step 3: Conclusion. \[ \boxed{ \text{Depletion layer decreases} } \]
- Positive terminal is connected to \(p\)-side.
- Negative terminal is connected to \(n\)-side.
Step 1: Understand depletion region. The depletion layer contains immobile ions and acts as a barrier to charge flow.
Step 2: Effect of forward bias. Forward bias opposes the built-in electric field. Hence barrier potential decreases. Therefore depletion layer thickness decreases.
Step 3: Conclusion. \[ \boxed{ \text{Depletion layer decreases} } \]
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