Photovoltaics
What are photovoltaics?
In photovoltaics, the sun's radiation energy is transformed into electric energy. This is accomplished by means of solar cells. As a rule, solar cells consist of the semiconductor silicon, which is particularly suitable for the manufacture of solar cells because of its high availability, low raw material costs and simple transformation. Semiconductors are substances that become electrically conductive when they are exposed to light or heat. Solar cells are essentially structured into two layers, where one layer is negatively charged and the other holds a positive charge. As soon as sunlight strikes the layers, a voltage tension develops between the two layers. This generates direct current within the solar cell. In order to be able to use this current, photovoltaic systems have a power inverter or AC converter. The inverter converts the direct current generated by the cells into alternating current, which can then be used for household purposes or to be fed into the public electricity grid.
sanyo-solar.eu