Write the two processes that take place in the formatioin for a p-n junction. Explain with the help of a diagram, the formation of depletion region and barrier potential in a p-n junction.

Explanation

### Step-by-Step Text Solution

**Step 1: Understanding the p-n Junction Formation**
A p-n junction is formed when p-type semiconductor material, which has an abundance of holes (positive charge carriers), is joined with n-type semiconductor material, which has an abundance of electrons (negative charge carriers).

**Step 2: Processes Involved in p-n Junction Formation**
1. **Diffusion of Holes and Electrons**:
- Holes from the p-side diffuse into the n-side.
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