Solar cells (solar chips, photovoltaic cells) are optoelectronic semiconductor sheets that use sunlight to directly generate electricity. As long as it is illuminated by light that meets certain lighting conditions, it can instantly produce voltage and generate current if there is a loop. In physics, it is called solar photovoltaic (photovoltaic, abbreviated PV), or photovoltaic for short. Solar cells are devices that directly convert light energy into electrical energy by photoelectric effect or photochemical effect. Crystalline silicon solar cells that work with the photoelectric effect are the most widespread, while thin-film cells that work with the photochemical effect are still in their infancy.
The principle of solar cells
Sunlight shines on the p-n junction of the semi-conconductor to form new hole-electron pairs. Under the action of the electric field of the p-n junction, holes are formed. are formed by Area p flows to area n and electrons flow from area n to area p When the circuit is connected, a current is formed. This is how photovoltaic solar cells work. Green solar energy
There are two methods of solar energy production, one is the light-heat-electricity conversion method and the other is the direct light-electricity conversion method.