The difference between P-type batteries and N-type batteries lies in the different raw material silicon wafers and battery preparation technology. N-type silicon wafers are made by doping phosphorus elements in silicon wafer materials and diffusing them. Although P-type batteries only need to diffuse one impurity and are low-cost, they have short minority carrier lifetime and low conversion efficiency. N-type cells have long minority carrier lifetime, no light-induced attenuation, good low-light effect, and small temperature coefficient. They are the hope for crystalline silicon solar cells to reach the theoretical limit efficiency.

According to relevant data, the current highest theoretical conversion efficiency of TOPcon/HJT has reached 28.7%/28.5%, and the highest mass production conversion efficiency is 25.6%/25.2% respectively, both of which are significantly higher than the theoretical limit of PERC 24.5%.

As a competitor of P-type batteries, N-type batteries have many advantages and continue to absorb the excellent ingredients of P-type batteries in their own development process. With the continuous improvement of various parts of N-type battery technology and the transformation of battery conversion efficiency from theory to reality, N-type batteries will definitely be able to write a new chapter in the photovoltaic battery industry!trina solar panels