Photovoltaic or PV cells convert light into electricity. PV cells are made from semiconductors such as silicon; the semiconductor absorbs some of the sunlight that hits it, and the light becomes energy in the semiconductor. This energy loosens electrons. In addition to a semiconductor, PV cells have an electric field to guide electrons in one direction, causing a current. Metal contacts are placed on top and on bottom of the PV cell so that the current can be put to external use.
Click here to cancel reply.
Sorry,At this time user registration is disabled. We will open registration soon!
Don't have an account? Click Here to Signup
© Copyright GreenAnswers.com LLC