Why not use crystal silicon battery N type silicon, boron diffusion is difficult, or material difficult to do, or the principle of the problem?
The first price is high, the N substrate cell conversion efficiency is high, the price is not cheap, good efficiency of P type silicon do not end; second, N doped phosphorus, phosphorus and silicon phase solubility, pull rod phosphorus uneven distribution of P type silicon doped boron, boron and silicon segregation coefficient of equivalent uniform dispersion is easy to control.
N type silicon wafer from the raw material price or quantity, and P type silicon wafer or some gap. This also led to the battery chip manufacturers for N battery has been in the laboratory stage, not mass production.Again, the P type battery is to take GA or boron, but the N type batteries into another material, I am not very clear, not engage in technology, huh, huh, huh, huh.The above information, I hope to help you.
Can use N type silicon chip, the current SUN POWER battery slice, is the use of N type silicon wafer production, conversion efficiency is very high, but the price is not cheap.At present, most of the domestic manufacturers do not have the production of battery N battery pack, it should be a cost problem.
