The negative fixed charge density contributed by graphene oxide is estimated as high as 6 x 10 ¹² cm ⁻² . Graphene oxide is therefore a promising candidate for Si solar cell passivation. However, the high-temperature steps for manufacturing commercial Si solar cells would change the composition of graphene oxide. Therefore, graphene oxide cannot be directly adopted by commercial PERC manufacturers with the high-temperature firing step after the rear passivation step. To suppress the high-temperature degradation, we have deposited the graphene oxide on the rear surface of commercial IBC cells directly, and V _oc , J _sc and efficiency of the cell all improved after 100 μL graphene oxide deposition. Graphene oxide can be adopted as the passivation material of commercial cells as long as the high-temperature process on graphene oxide can be suppressed.

中文翻译：

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以氧化石墨烯为钝化膜的商用太阳能电池

氧化石墨烯贡献的负固定电荷密度估计高达6 x 10 ¹² cm ^-2 。因此，氧化石墨烯是硅太阳能电池钝化的有希望的候选者。然而，制造商用硅太阳能电池的高温步骤会改变氧化石墨烯的成分。因此，在背面钝化步骤之后的高温烧制步骤中，商业PERC制造商不能直接采用氧化石墨烯。为了抑制高温降解，我们直接在商用 IBC 电池的背面沉积了氧化石墨烯，V _oc , J _sc在 100 μL 氧化石墨烯沉积后，电池的效率和效率都得到了提高。只要能够抑制氧化石墨烯的高温过程，就可以采用氧化石墨烯作为商用电池的钝化材料。