Solar cells are made of:

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Conductors

Insulator

Semiconductors

Superconductors

answer is C.

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Detailed Solution

Concept- The photovoltaic effect may be used to describe the conversion of solar energy—the energy that comes from the Sun—into electrical energy. To do this, we need a substance that can absorb photons and transfer the energy to the semiconductors' electrons. Electric current is produced by these electrons. This electrical current afterwards serves as a source of energy for electrical devices.
Solar cell surfaces can reflect, absorb, or transmit sunlight when it comes in contact with them. We need a substance that can successfully absorb photons for a solar cell. The characteristics of both metals and insulators may be found in semiconductors. This explains why semiconductors transform light energy into electrical energy quickly.
Semiconductors come in a wide variety of varieties, which can be employed for this. Solar cells are frequently manufactured using silicon. The silicon semiconductors are strong and resilient, have a low weight-to-volume ratio, and have a long lifespan. In comparison to other semiconductors, silicon-based semiconductors are extremely inexpensive. The substance that is widely accessible is silicon. As a result, silicon is utilized to create solar cells.
Hence, the correct option is 3.

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