If you want to know about Solar cell then you are exactly in right place. Here is the information about Solar cell. It is also explained in diagram. It is also known as photovoltaic cell.
It is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell (in that its electrical characteristics-- e.g. current, voltage, or resistance- vary when light is incident upon it) which, when exposed to light, can generate and support an electric current without being attached to any external voltage source.