How much is the light pole monocrystalline silicon solar panels is how to make

By adjusting the laser power form different heavily doped area square resistance, studied different heavily doped region of square resistance on the battery main electrical parameters, the influence of the analysis of the reasons for such changes. Finally compared the laser doping selective



& n solar street lamps manufacturer BSP; By adjusting the laser power form different heavily doped area square resistance, studied different heavily doped region of square resistance on the battery main electrical parameters, the influence of the analysis of the reasons for such changes. Finally compared the laser doping of traditional selective emitter solar cell and solar cell performance and the external quantum efficiency. After process optimization, laser doping selective emitter solar cell conversion efficiency than traditional solar cells have 0. 24% improvement.

solar panel battery photoelectric conversion efficiency is an 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 cell 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 carrier compound, and improve the surface passivation effect;

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