Dynamic panels conversion efficiency solar street lamps | industry | lighting: the rural solar led street lamp manufacturers

Solar panels is the core part of the solar street light, is also the most valuable part of the solar street light. Its function is to convert solar energy into electric energy, or sent to stored in the storage battery, or promote work load. Its high conversion rate is not high will directly affect the effect of the use of solar street lamps, so we can use several ways to increase the conversion efficiency of solar panels. The first minus reflection film. Its basic principle is to be located in medium and cell surface with a range of the refractive index of film, can make the incident light reflection at all levels of mutual interference so as to completely disappear. Monocrystalline cells can generally use TiO2 and SiO2, SnO2, MgF2 film of single or double minus reflection. In the battery surface evaporation system good suede after reducing reflection film can make the shoot rate fell to 2%. The second light trap structure. General high-efficiency monocrystalline silicon cell by chemical etching system pile technology, made of suede reflectivity can reach below 10%. At present more advanced manufacturing technology is reactive velvet (from child etching technologies such as RIE) , the technology has the advantage of wafer of silicon wafer is to have nothing to do, is suitable for the thinner wafers, usually using SF6 / O2 mixed gas, in the process of etching, F free radicals was formed by chemical etching of silicon can be volatile SiF4, free radicals formed SixOyFz to passivation treatment of side walls, form the structure of suede. Third improve silicon substrate material selection of quality materials, such as N type silicon with carrier long life, small system and boron oxygen reaction after, good conductivity and low saturation current. Fourth passivation passivation technology can effectively weaken the photoproduction carrier in some regions of the composite. General high efficiency solar cells can be used hot passivation passivation, atomic hydrogen, oxygen, or use of phosphorus, boron, aluminum surface diffusion passivation. Hot oxygen passivation is the front and back of the battery form silicon oxide film, can effectively prevent the carrier at the surface of composite. Atomic hydrogen passivation is because the surface of the silicon has a large number of dangling bond, the dangling bond is an effective carrier recombination center, and key atomic hydrogen can neutralize suspension, so weakened the compound. This information is provided by lighting exclusive and source from http://www. jhzm88. com/tynlddcbzh。 超文本标记语言