Monocrystalline silicon is mains street lamp Yang can plate made of how

Improve the photoelectric conversion efficiency of solar panels is the important way to enhance the competitiveness of industry. Emitter doping concentration on the influence of the solar cell conversion efficiency is twofold, with a high concentration of doping, can reduce the contact resistance between silicon and electrode, reduce



improve the photoelectric conversion efficiency of solar panels is the important way to enhance the competitiveness of industry. Emitter doping concentration on the influence of the solar cell conversion efficiency is twofold, with a high concentration of doping, can reduce the contact resistance between silicon and electrode, reduce the series resistance of the battery, but high doping concentration leads to carrier compound, Jane reduced life spans, affect the open circuit voltage and short circuit current of the battery. Using low concentration of doping, can reduce the surface recombination, improve life Jane, but will inevitably lead to the increase of contact resistance, impact batteries in series. Selective emitter solar led street lamp plate structure design is a good way to solve this contradiction. Selective emitter solar cells, that is, the metal gate line contact with the silicon area and its nearby in high concentration of doping, and the outside electrode area of low concentration doping. Both reduced the wafer and the contact resistance between the electrodes, and reduces the surface composition, improve the life of Jane. The structure of the battery has the following obvious advantages: at 3

( 1) To reduce the series resistance, improve the fill factor;

　　( 2) Reduce the carrier compound, improve the effect of solar panel surface passivation;

　　( 3) Battery short wave spectral response, and improve the short circuit current and open circuit voltage.