How Does A Solar Cell Generate Power?

Solar PV Cells

PV = Photovoltaic = Photo (Light) + Volt (Electric Potential)

Photovoltaic solar cells are made of layers of crystalline silicon, covered with a very hard, protective layer of non-reflective glass.

How Does a Solar Cell Generate Electricity?

  • A solar cell is made up of two layers of silicon that are treated to let electricity flow through them when exposed to sunlight.
  • One layer is positively charged, the other negatively charged.
  • As photons enter the layers, they give up their energy to the atoms in the silicon in the form of electrons.
  • When photons hit the layers of silicon, electrons pass through the junction between the positive and negative layers, generating electric current.

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