Which of the following materials can be used for making solar cell ?

Options

A. Iron
B. copper
C. Lead ziconate
D. Gallium arsenide

Answer

To determine which materials can be used for making solar cells, we need to analyze the options given and their properties in relation to solar energy conversion.

### Step-by-Step Solution:

1. **Understanding Solar Cells**:
Solar cells convert sunlight into electricity through the photovoltaic effect. The materials used for solar cells must have suitable electronic properties, particularly a suitable bandgap.

2. **Evaluating the Options**:
- **Option 1: Iron**
- Iron is a metal with a low bandgap and does not have suitable semiconductor properties for efficient light absorption and energy conversion.
- **Option 2: Copper**
- Copper is also a metal and primarily used for electrical connections rather than as a semiconductor material for solar cells.
- **Option 3: Lead Zirconate**
- Lead Zirconate is a ferroelectric material but not commonly used in traditional solar cells. It does not have the ideal properties for effective solar energy conversion.
- **Option 4: Gallium Arsenide**
- Gallium Arsenide (GaAs) is a semiconductor with a high bandgap (~1.43 eV) and excellent light absorption properties, making it highly efficient for solar cells.

3. **Conclusion**:
Based on the analysis, the only suitable material for making solar cells from the given options is **Gallium Arsenide**.

### Final Answer:
The material that can be used for making solar cells is **Gallium Arsenide**.

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