How do solar cells work?
Solar cells consist of several semiconductor materials. These are materials that alter their electrical conductivity when under feeding of light or heat. For the most part, 2 layers of crystalline silicium lying upon another are being used. The silicium layers are spiked with chemical elements like boron or phosphorus. Thereby the layers act like the negative and positive pole of a battery. In the barrier layer, which is only one thousandth of a mm thick, a voltage that applies at the electrodes will be caused during light irradiation. Thy typical voltage during direct sun irradiation is about 0.5 V. The available electric current depends upon the size of the solar cell.
