The modules of poly crystal solar panels are a new generation of battery components that have the advantages of high conversion efficiency and long life of mono silicon cells, and relatively simplified material preparation processes for amorphous silicon thin-film cells. The modules of poly crystal solar panels are the components of polycrystalline silicon solar cells.
(1) The modules of poly crystal solar panels are made into polycrystalline silicon ingots by casting and directional solidification, and then processed into polycrystalline silicon wafers through cutting, polishing and other processes. They are further washed, diffused, deposited anti-reflection film, screen-printed electrodes, and sintered. And other processes are made.
(2) Polycrystalline silicon wafers produced by the casting method do not need to go through the single crystal drawing process, consume less energy than single crystal silicon cells, and have no restrictions on the shape, which can be made into a square that is convenient for the layout of photovoltaic modules; except that the single crystal drawing process is not required In addition, the mature technology of manufacturing mono silicon solar panels can be applied in the manufacture of polycrystalline silicon cells.
(3) The cell efficiency of poly crystal solar panels can reach 18%, which is slightly lower than that of monocrystalline silicon cells. Compared with monocrystalline silicon solar panels, polycrystalline silicon cells have lower efficiency, but they save energy and silicon raw materials to achieve a balance between process cost and efficiency.