With the increase of population, the earth is facing a shortage of energy and a lack of energy types, and scientists are constantly looking for new energy sources. Solar energy has been used in our daily lives in the past, but the advent of solar panels has further expanded its use. So what is the principle of solar energy instead of generators? Solar panel manufacturers are here to tell you.
Under the action of the electric field of the p-n junction, the holes flow from the n-region to the p-region, and the electrons flow from the p-region to the n-region, and the current is formed after the circuit is turned on. This is how photoelectric effect solar cells work.
There are two ways of solar power generation, one is the light-heat-electricity conversion mode, and the other is the light-electricity direct conversion mode.
(1) The light-heat-electricity conversion mode generates electricity by using the heat energy generated by solar radiation, which is generally converted by the solar collector into the vapor of the working fluid, and then drives the steam turbine to generate electricity. The former process is the light-heat conversion process; The latter process is the thermal-electric conversion process.
(2) The light-electricity direct conversion method is to use the photoelectric effect to directly convert solar radiation energy into electrical energy, and the basic device of light-electricity conversion is the solar cell. A solar cell is a device that directly converts sunlight energy into electrical energy due to the photogenerated volt effect, and is a semiconductor photodiode, when sunlight shines on the photodiode, the photodiode will turn the sun's light energy into electrical energy and generate an electric current. When many cells are connected in series or parallel, they can become a solar cell array with relatively large output power.
Although the daily power generation of the power station has been very large, but still can not meet the needs of people, although the emergence of solar panels can not completely solve the problem of insufficient electricity, but to a certain extent is slowed down, and the use of solar power generation is a more environmentally friendly approach.