Photovoltaic cells systems, or simply PV system or photovoltaic solar energy system, is an energy generating system, which employs the use of photovoltaic in the conversion of electric energy into other energy forms such as heat, electricity etc. photovoltaic systems use light energy from the sun to create electric current. It is one of the best known methods of using free solar energy and is the most efficient. In the recent times many photovoltaic systems are used in rural areas for lighting up homes and industries.
The photovoltaic solar energy system has many advantages. It can save us money on energy bills, and we can also help save the environment by reducing the use of fossil fuels, thus conserving our natural resources. We need to keep in mind that all sources of energy are not renewable; and therefore they are bound to come to an end. However, with the use of photovoltaic energy we can hope that we can help reduce the effects of global warming and the depletion of fossil fuels. By creating electric current from the sun’s light we can not only use this source effectively, but in fact the photovoltaic energy system can create a large amount of electric current.
This photovoltaic energy is captured by photovoltaic cells, which are made of silicon, a semiconductor, which absorbs the photons given off by sunlight and passes them on to an array of wires with the ends connected to a battery. The incoming photons are then picked up by the anode, which is a semiconductor material and gives off electrical currents when the electrons near it strike the electrodes and give out photons. The electrons near the anode are knocked loose by an electric current and flow as electrical currents to an electrode. These electrons then create a voltage between the battery and the electrode, which create an electrical current when it strikes an electrical wire.