What are the advantages of monocrystalline silicon and polycrystalline silicon in solar power?
no mechanical groove in the same area on the efficiency of 16%, using buried gate structure, mechanical groove in the 130 square centimeters of polycrystalline Battery efficiency of 15.8%. (1) monocrystalline silicon solar cells
and the production process of polysilicon can be achieved by casting method and direct solidification method. Grain size of the grain size of centimeters; [4] due to nearly a decade of monocrystalline silicon technology research and development soon, in which the process is also used in the production of polycrystalline silicon cells, such as the choice of corrosion emission junction, back surface field, , Surface and body passivation, fine metal gate electrode, the use of screen printing technology can reduce the width of the gate electrode to 50 microns, the height of 15 microns or more, rapid thermal annealing technology for polysilicon production can greatly shorten the process time,
polysilicon, ribbon silicon, thin film materials (including microcrystalline silicon-based film, compound-based film and dye film). From the industrial development point of view, the focus from the single crystal to the direction of the development of polysilicon and film, the main reason: [1] solar head can supply more and less head and tail; [2] for solar cells, (3 hours) The production process of polysilicon is progressing continuously. The automatic casting furnace can produce more than 200 kilograms of ingot per production cycle (50 hours),
In the use of solar energy, monocrystalline silicon and polysilicon also play a huge role. Although the current terms, to make solar power has a larger market, the majority of consumers to accept, we must improve the efficiency of solar cell photoelectric conversion, reduce production costs. From the current development of international solar cells can be seen that the development trend of monocrystalline silicon,
single The wafer hot process time can be completed in less than one minute, using the process to make a cell conversion efficiency of more than 14% on 100 square centimeters of polysilicon wafers. It is reported that the current 50 ~ 60 micron polysilicon substrate produced on the battery efficiency of more than 16%. The use of mechanical groove, screen printing technology in the 100 square centimeter polycrystalline efficiency of more than 17%,
