What is Soler cell?

solar cell is a device which is used for converting radiation energy into electrical energy. These cells generate a voltage proportional to electromagnetic radiation intensity and are called the photovoltaic cells because of their voltage generating capability.
selenium and silicon are the most widely used materials for solar cells though gallium, arsenide, indium, arsenide, and cadmium sulphide are also used. The construction and cross-section of a typical power solar cell for use as an energy converter. The surface layer of p-type material is extremely thin so that light can penetrate to the junction. The nickel-plated ring around the p-type material is the positive output terminal and the plating at the bottom of the n-type material is the negative output terminal, Power solar cells are also available in flat strip for efficient coverage of available surface area.