Will the photovoltaic power generation system still work after continuous rain or smog?

The main principle of photovoltaic power generation is the photoelectric effect of semiconductors. When a photon irradiates a metal, its energy can be completely absorbed by an electron in the metal. The energy absorbed by electrons is large enough to overcome the gravity inside the metal and escape from the metal surface to become photoelectrons. Silicon atoms have four outer electrons. If pure silicon is doped with atoms with five outer electrons, such as phosphorus atoms, it becomes an N-type semiconductor. If pure silicon is doped with atoms with three outer electrons, such as boron atoms, a P-type semiconductor is formed. When P-type and N-type are combined, the contact surface will form a potential difference, which will become a solar cell. When sunlight strikes the P-N junction, holes move from the P-pole region to the N-pole region, and electrons move from the N-pole region to the P-pole region, forming a current.

Roof photovoltaic power generation equipment can also generate electricity in weak light, but in rainy or foggy days, when solar radiation is low, if the working voltage of photovoltaic power generation system can not reach the starting voltage of inverter, photovoltaic power generation system can not work. Because the grid-connected power generation system is connected to the power grid, when the photovoltaic power generation system fails to operate, the power of the power grid will be automatically replenished, so there is no problem of power shortage and power outage in rainy and foggy weather.