In the sunlight irradiation on the PN junction, the PN junction absorbs light energy to excite the electrons and holes, in the PN junction to produce voltage, known as “photovoltaic effect” or simply “photovoltaic effect”. Simply put, the photovoltaic effect is the process of converting “light” into “electricity”.

2, Photovoltaic solar panels are what?

Solar panel is a due to the photovoltaic effect and the sun's energy directly into electrical devices, is a semiconductor photodiode, when the ends of the battery heterozygous charge accumulation, the photoelectric effect, photons irradiated to the metal, its energy will be absorbed by the metal in a certain electron all the electrons, electrons to absorb enough energy to leave the surface of the metal to become photoelectrons.

And under the action of light, photovoltaic solar panels produce electric potential at both ends, through the charge separation of the interface layer, the light energy is converted into electromagnetic waves, through the conversion of electromagnetic waves (photons) for power generation, on both sides of the silicon wafer plus electrodes and access to the voltmeter, connecting the circuit to form the electric current, for crystalline silicon solar cells, the more light energy absorbed by the interface layer, the interface layer, that is, the greater the area of the battery, the greater the current is formed in the solar cell. The more light energy absorbed by the interface layer, the larger the interface layer, i.e. the cell area, the larger the current formed in the solar cell, which is the working principle of photovoltaic solar panels.

Photovoltaic power station in the process of converting solar energy into electricity will not produce any electromagnetic radiation, only the conversion of direct current into alternating current will produce a small amount of electromagnetic radiation, and is lower than commonly used household appliances.

The electromagnetic environment of solar PV power generation system is scientifically determined to be lower than the limit value of each index. In the industrial frequency band, the electromagnetic environment of solar photovoltaic power generation system is even lower than that of the normal use of common household appliances, which will not affect personal health.