The flat plate of the sprinkler in the solar fish pond can effectively receive the light energy converted by the sun, which generally refers to the radiation energy of sunlight. The nuclear reaction from hydrogen to helium in the sun constantly releases huge energy and radiates energy into space. This energy is solar energy.
Solar cell is a device that uses the photoelectric effect of semiconductor materials to convert solar energy into electric energy. The basic process of photovoltaic effect: assuming that light is irradiated on the solar cell and received at the interface layer, photons with sufficient energy can excite electrons from valence bonds in P-type silicon and N-type silicon, resulting in electron-hole pairs. Before recombination, the electrons and holes adjacent to the interface layer will be separated from each other by the electric field of space charge, the electrons will move to the positively charged N region, and the holes will move to the negatively charged P region.