In recent years, photovoltaic power generation gradually into the rural households, due to the rural buildings are low, no shade around, and grid-connected convenience, so in recent years many farmers friends in order to respond to the national call, but also one after another in their own roof installed photovoltaic power panels. On the one hand, their own use, on the other hand, the state has subsidies, and the electricity generated and connected to the grid also has a part of the income.
Solar photovoltaic rainy day power generation principle.
Solar cells early is a phenomenon discovered by French physicist Alexandre Edmond Becquerel (1820-1891) in his research - photovoltaic phenomenon. It is related to the photoelectric effect. Back then, Albert Einstein successfully applied the quantum principle to illustrate this phenomenon also won the Nobel Prize.
Photovoltaic principle, when a photon shines into a semiconductor material, collides with the electron in the atom, if the photon has enough energy, then the electron in the outer layer of the atom will absorb the energy, if the electron absorbs enough energy, it will break away from the bondage and escape from the metal. It becomes a photoelectron. Photovoltaic panels are made of silicon, and boron or phosphorus atoms are doped into the silicon then p-type or N-type semiconductors will be formed. The contact surfaces form an electrical potential difference and an electric current is formed.
According to Planck's law, the energy of an incident photon is inversely proportional to its wavelength. Short-wavelength radiation occupies the purple end of the spectrum and includes ultraviolet radiation and gamma rays. On the other hand, long-wavelength radiation occupies the red end of the spectrum and includes infrared radiation, microwaves and radio waves. Therefore, solar photovoltaic panels can generate electricity on rainy days as well, but due to the current technology, the efficiency of solar energy conversion is still very low, and the efficiency of electricity generation on rainy days is not as good as during the day.
And the current solar photovoltaic panels can also generate electricity by friction in the rainy days, the rainy days will be converted into graphene power generation. Because there are sodium, calcium and ammonium ions in rainwater, and the positively charged ion layer will interact with the negatively charged electrons of graphene to combine, thus creating a double-layer structure similar to the proposed capacitor. The potential difference between these two layers of the structure is large enough to generate voltage and current.
There are also many factors that affect solar power generation, such as the thickness of the solar photovoltaic panels, photons can photovoltaic panels between the shuttle hit other particles, resulting in the dissipation of energy. Another factor that affects efficiency is the reflectivity of the solar cell. In order to reduce the loss of reflectivity and improve efficiency, solar cell manufacturers usually coat the cells with non-reflective, light-absorbing materials. This is why solar cells are usually black.
With the development of clean energy in recent years, solar, wind, and water stations, solar photovoltaic power can alleviate the pressure caused by current energy sources, and it can also alleviate the earth's greenhouse effect.
