What are photo- voltaic compounds ?

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Photovoltaic Compounds:**
Photovoltaic compounds are materials that have the ability to convert sunlight into electricity. This process is known as the photovoltaic effect.

2. **Mechanism of Photovoltaic Effect:**
When sunlight strikes these compounds, it excites the electrons within the material, allowing them to flow and generate an electric current. This is the fundamental principle behind solar energy conversion.

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