Photovoltaic Cell

A photovoltaic cell is a device that generates an electric current when exposed to light. The basic principle behind its working is the photovoltaic effect.

photovoltaic cell

The photoelectric cell is formed of a p-type and an n-type semiconductor. The p region contains more number of holes and the n region consist of more electrons. They are joined together to create a p-n junction. The photons striking in the cell pass through the positively charged holes and are absorbed by negatively charged electrons and cause a potential difference.

Advantages

  • Fast response.
  • High efficiency.
  • Generate voltage without any bias.

Disadvantages

  • Powe generation depends on weather conditions.
  • Easily damaged.
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