Performance improved by point-contact electrodes and SiO2/SiN X layers at rear

Performance improved by point-contact electrodes and SiO2/SiN X layers at rear

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The rear point-contact fabricated through the laser-opening technique for mass production was applied on the photovoltaic cells. Laser opening, different layers for passivation (SiO2) and protection (SiN X ) were employed to investigate their impact on the performances of solar cells. The SiN X layer protects the SiO2 layer from being burnt through by aluminium paste at the co-firing step. A conversion efficiency (η) of 16.91% with an open-circuit voltage of 628 mV was obtained for the optimal cell, a stack structure with SiO2 and SiN X layers, which also achieves a lower contact resistance of 6.66 mΩ·cm2 and a higher light-beam-induced current of 80.77 mA/cm2. The optimal cell also showed longer lifetime and 3–4% increased quantum efficiency in the visible wavelength range. Therefore, the developed process has simplicity and reliability, is fast and cost-effective and could be applied to industrial applications.


    1. 1)
    2. 2)
    3. 3)
    4. 4)
      • 4. Eisele, S., Roder, T., Ametowobla, M., Bilge1, G., Kohler, J.R., Werner, J.H.: ‘18.9% efficient silicon solar cell with laser doped emitter’. IEEE Photovoltaic Specialists Conf., Philadelphia, PA, USA, June 2009, pp. 883885, doi: 10.1109/PVSC.2009.5411148.
    5. 5)
    6. 6)
    7. 7)
      • 7. Lauermann, T., Lüder, T., Scholz, S., Raabe, B., Hahn, G., Terheiden, B.: ‘Enabling dielectric rear side passivation for industrial mass production by developing lean printing-based solar cell processes’. IEEE Photovoltaic Specialists Conf., Honolulu, HI, USA, June 2010, pp. 028033, doi: 10.1109/ PVSC.2010.5614042.
    8. 8)
      • 8. Luque, A., Hegedus, S.: ‘Handbook of photovoltaic science and engineering’ (Wiley, Chichester, West Sussex, England, 2003).

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