what is the function of solar photovoltaic cell
Answers
Answer:
A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.[1] It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Individual solar cell devices are often the electical building blocks of photovoltaic modules, known colloquially as solar panels. The common single junction silicon solar cell can produce a maximum open-circuit voltage of approximately 0.5 to 0.6 volts.[2]
A conventional crystalline silicon solar cell (as of 2005). Electrical contacts made from busbars (the larger silver-colored strips) and fingers (the smaller ones) are printed on the silicon wafer.
Symbol of a Photovoltaic cell.
Solar cells are described as being photovoltaic, irrespective of whether the source is sunlight or an artificial light. In addition to producing energy, they can be used as a photodetector (for example infrared detectors), detecting light or other electromagnetic radiation near the visible range, or measuring light intensity.
The operation of a photovoltaic (PV) cell requires three basic attributes:
The absorption of light, generating either electron-hole pairs or excitons.
The separation of charge carriers of opposite types.
The separate extraction of those carriers to an external circuit.
In contrast, a solar thermal collector supplies heat by absorbing sunlight, for the purpose of either direct heating or indirect electrical power generation from heat. A "photoelectrolytic cell" (photoelectrochemical cell), on the other hand, refers either to a type of photovoltaic cell (like that developed by Edmond Becquerel and modern dye-sensitized solar cells), or to a device that splits water directly into hydrogen and oxygen using only solar illumination.
Answer:
A solar cell, also known as a photovoltaic cell, is an electrical device that uses the photovoltaic effect, a natural physical and chemical phenomena, to convert light energy directly into electricity.
Explanation:
A solar cell is simply a photoelectric cell which functions when the sufficient amount of light energy (threshold energy) incident on its surface and this helps in the release of electrons which moves through the circuit and generates electrical current.
They are used in various electronic devices such as calculators, electronic toys, and portable radios.
They are also used in satellite and space vehicles.
They can be function as photodetectors (for instance, infrared detectors), for the detection of light or other electromagnetic radiation that is close to the visual range, or for the measurement of light intensity.
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