• Solar cell TOPCon Type N Technology

    The front and back of Maysun N-type bifacial solar cell are displayed.


    Type N Bifacial Solar Cells

    • High conversion efficiency with high reliability
    • Uniform cell performance with stable process control
    • Both sides can generate electricity
    • Low mismatch of cell performance during encapsulation
    • Excellent power generation performance under low irradiation conditions
    • Low hot spot effect
    The front and back of Maysun N-type double-sided solar modules are displayed. N-type double-sided power generation battery production materials have good natural characteristics, high double-sided gain, and high reliability.



    Type N Bifacial Solar Modules

    • Double-sided modules combine leading NTOPCon, 9BB and half cell technology.
    • The N-type material has zero LID / LeTID risks and makes the modules more reliable, more bi-ease, higher efficiency, lower temperature coefficient and longer life.
    • Number of cells: 120pcs (12 * 10)
    • Maximum efficiency (%): 21.03%
    • Operating temperature (℃): -40 ℃ ~ + 85 ℃
    • Maximum System Voltage (V): 1500V (IEC)
    • Temperature coefficient of Pmax: -0.32% / ℃
    • Nominal Operating Cell Temperature (NOCT): 42 ± 2 ℃
    The effect of Maysun N-type double-sided solar cells on light-induced attenuation. The main problem of the P-type battery is the attenuation caused by the boron-oxygen pair, while the phosphorus-doped N-type battery has a very low boron content, which essentially eliminates the effect of boron-oxygen on the light-induced attenuation.




    No Light Induced Degradation

    TOPCon is a N-type silicon substrate battery. Phosphorus doped N-type crystalline silicon contains extremely low boron content, which weakens the boron-oxygen influence.
    Maysun N-type double-sided solar cell structure diagram: Mixing pure silicon with phosphorous atoms requires very little energy to make a certain “excess” electron of the phosphorous atom (the outermost five electrons) escape. When phosphorus atoms are used for doping, the resulting silicon is called N-type ("n" stands for negative electricity). Phosphorus is injected into the N-type semiconductor material to form a p/n-type solar cell called an N-type silicon wafer; a solar cell made of it is called an N-type cell.




    N-Type Bifacial Solar Cell Structure Chart

    The TOPCon battery retains and utilizes the existing traditional P-type battery equipment manufacturing process to the greatest extent. It only needs to increase the boron expansion and thin film deposition equipment, and does not require back hole opening and alignment, which greatly simplifies the battery production process and reduces the difficulty in mass production.




    Process Flow Diagram of Type N Double Sided Solar Cell