N-type TOPCon is a tunneling oxide passivated contact solar cell technology based on the principle of selective carriers. The battery structure of this technology is an N-type silicon substrate battery, where an ultra-thin layer of silicon oxide is prepared on the back of the battery, and then a thin layer of doped silicon is deposited. The two together form a passive contact structure.
This technology effectively reduces surface recombination and metal contact recombination, providing greater space for further improving the conversion efficiency of N-PERT batteries.
Compared with traditional P-type PERC batteries, N-type TOPCon batteries have higher minority carrier life and better performance, which makes N-type TOPCon batteries have higher conversion efficiency improvement space. In addition, the N-type TOPCon battery also has a better double-sided rate, which helps to improve the power and power generation of the components.
In summary, N-type TOPCon is an advanced PV technology with great potential for development. By improving conversion efficiency, reducing costs, and improving reliability, N-type TOPCon batteries can become the core competitiveness of the future PV market.
N-type and P-type PV cells
N-type PV cells and P-type PV cells are two different types of solar cells, with the main difference being the doping of raw materials and the difference in minority carrier lifetime.
The doping substance of N-type PV cells is phosphorus, while the doping substance of P-type PV cells is boron. In addition, N-type PV cells have a longer minority carrier lifetime, while P-type PV cells have a shorter minority carrier lifetime. These differences result in differences in performance and cost between the two types of batteries.
Overall, N-type PV cells have high conversion efficiency and low cost, while P-type PV cells have a long history of development and mature production processes. The specific type of battery is better depends on the specific application requirements and scenarios.
