<How a Solar Cell Works from SuntrekSolar.com - 800.292.7648 - a Solar Energy Company
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Each individual cell is made up of two layers of silicon: a p-type layer (containing free holes, or the absence of electrons) overlain by an n-type layer (containing free electrons).

An electric field is formed where the two layers are joined. The free electrons in the n-type layer move over to fill the holes in the p-type layer. As a result, the p-type layer now has a negative charge due to gaining electrons and the n-type layer has a positive charge due to the loss of electrons.

When sunlight hits the electric field, electrons in the p-type layer are knocked free and move toward the positively-charged n-type layer, creating a DC current. Once the electrons reach these layers, they are passed to the outside circuit, providing electrical power.

Here is a brief animation on how solar panels convert the sun's energy into electricity.

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Suntrek’s solar electric system consists of an array of solar electric panels, an inverter and a computerized solid-state controller. The solar electric panels generate DC electricity directly from sunlight. The inverter coverts the DC electricity produced by the panels to AC electricity. The computerized controller regulates the system and directs your extra power back to the utility grid. In applications where you are not connected to the grid or you want backup power, batteries are required.

For more information, see manuals and specifications.


Suntrek's Solar Electric Brochure (PDF)

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