solar panels: high-performance, efficient and durable
Solar or photovoltaic modules are the heart of every photovoltaic system. The modules contain parallel or series-connected solar cells that generate energy from solar radiation. For private applications and small businesses, the solar modules are usually mounted on the roof of the house. The output of the PV system created by interconnecting the modules depends on many factors such as the number of modules, module type and output, roof pitch or solar radiation.
How do solar panels work?
Photovoltaic modules (PV modules, solar panels) convert sunlight into electrical energy. The solar cells inside each panels are responsible for this. When light shines on the cell it creates an electric field across the layers. The stronger the sunshine, the more electricity is produced.
Since an individual solar cell produces only a little electricity, several of them are combined per solar panel. Inside these cells is a layer with a surplus of positive charge carriers (p-layer) and a second layer with a surplus of negative charge carriers (n-layer). An internal electrical field builds up at the so-called p-n junction (the interface between the layers) which is normally made of silicon. This leads to a charge separation of the charge carriers released by the incidence of light. The electrical charge can be made usable via metal contacts. Direct current then flows if an electrical consumer is connected.
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