What is solar cell principle?

Answer: A solar cell is nothing but a device that is capable of converting light energy into electrical energy. For this it uses photovoltaic effect. They use direct current (DC) power to convert sunlight. However, a single solar cell cannot provide enough power.

Layering of p-type and n-type silicon crystals is present on top of each other. The “photovoltaic effect,” which occurs when light strikes the crystals, creates energy.

Mechanism of working of solar cells

• It creates energy by causing electrons to hop across the junction between two types of silicon (n- and p- type) using sunlight
• Photons (light particles) attack the top surface of the cell when sunlight shines on it
• Photons (yellow blobs) transport energy down the cell membrane
• In the bottom, p-type layer, photons give up their energy to electrons (green blobs)
• This energy is used by the electrons to pass the barrier into the top, n-type layer and escape into the circuit
• Flowing of electrons across the circuit leads to the bulb being lit up

Benefits of Solar Cells

• A source of energy that is cost-effective
• Solar cells offer a fantastic way to save money on your power bill
• The fact that solar energy is a completely renewable energy source is the most crucial factor
• Far too low maintenance cost