What is Solar PV (Photovoltaic) solar cell?
Close to 95% of all solar cells are made of silicon. Silicon is a classical metalloid and consequently has properties of both metals and non-metals. Quartz sand, which is well researched and also widespread in chip technology, is the base material for semiconductors. Silcon is the second most abundant element on Earth after oxygen. In order to produce solar cells from it, the raw silicon needs to be cleaned extensively and crystallised. Every solar cell has a possitive and negative layer. When sunlight hits the cell, an electric charge is generated between the two layers. This is referred to as the inner photoelectric effect. If you attach contacts to the two silicon layers, current flows. Once covererted to alternating (AC) current through an invereter can be utilised as convential electricity out of the socket. A Photovoltaic system therefore give you a direct energy from the sun.
