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Development of high efficiency back passivated silicon solar cells with screen printed contacts

机译:用筛网开发高效率背钝化硅太阳能电池,用筛网打印触点

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This paper presents a detailed analysis of point-contacted aluminium rear side for silicon solar cells. An industrial feasible process for these solar cells based on screen-printed aluminium layer and thermal oxide/silicon nitride passivation is described. The local removal of the passivation stack by the mean of laser ablation is studied. Laser conditions are found to selectively and locally ablate the layers and reduce the laser-induced damages in the Si and the passivation layer. Results of these studies are applied on large area back passivated solar cells and electrical parameters highlight the importance of parasitic shunting on this type of structure.
机译:本文介绍了硅太阳能电池点接触铝后侧的详细分析。基于丝网印刷的铝层和氮化硅/氮化硅钝化的这些太阳能电池的工业可行方法。研究了通过激光消融的平均值局部去除钝化堆。发现激光条件选择性地烧蚀层并减少Si和钝化层中的激光诱导的损伤。这些研究的结果应用于大面积回钝的太阳能电池和电气参数突出了寄生分流对这种结构的重要性。

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