How does the width of a depletion region of a pn junction vary if doping concentration is increased?

Explanation

To determine how the width of the depletion region of a pn junction varies with increased doping concentration, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the PN Junction**:
- A pn junction consists of p-type and n-type semiconductors. The p-type has holes as majority carriers, while the n-type has electrons as majority carriers.

2. **Formation of the Depletion Region**:
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