Electroplated Copper Metal Contacts on Perovskite Solar Cells,Solar RRL

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Electroplated Copper Metal Contacts on Perovskite Solar Cells
Solar RRL ( IF 6.0 ) Pub Date : 2021-07-22 , DOI: 10.1002/solr.202100381
Thibaud Hatt ₁ , Özde Ş. Kabakli ₁ , Patricia S. C. Schulze ₁ , Armin Richter ₁ , Stefan W. Glunz ₁ , Markus Glatthaar ₁ , Jan Christoph Goldschmidt ₁ , Jonas Bartsch ₁

Affiliation

Electroplated copper contacts on small-area single-junction perovskite solar cells (PSCs) using an atomic layer deposited (ALD) Al₂O₃ masking layer on ITO are demonstrated for the first time. The photoconversion efficiency of ≈11% after manufacturing the Cu contacts confirms that PSCs can survive the wet-chemical plating process. From the successful realization of plated contact fingers, the creation of an electrical contact between the Cu electrode and the ITO on the FA_0.75Cs_0.25Pb(I_0.8Br_0.2)₃ perovskite absorber is inferred. Furthermore, scanning electron microscopy (SEM) with energy-dispersive X-ray (EDX) analysis shows the formation of a compact interface between ITO and plated Cu. An additional plating approach, using self-passivated aluminum as mask, allows to produce well-defined 30 μm wide Cu contacts on the PSC. Such a plating process allows for plating a low-resistive Cu grid simultaneously on both sides of a perovskite silicon heterojunction tandem solar cell with TCO, independent of substrate size.

中文翻译：

钙钛矿太阳能电池上的电镀铜金属触点

首次展示了在 ITO 上使用原子层沉积 (ALD) Al ₂ O ₃掩膜层在小面积单结钙钛矿太阳能电池 (PSC) 上电镀铜触点。在制造铜触点后，约 11% 的光转换效率证实了 PSC 可以在湿化学电镀过程中幸存下来。从成功实现电镀接触指，在铜电极和 FA 上的 ITO 之间建立电接触_0.75 Cs _0.25 Pb(I _0.8 Br _0.2 ) ₃推断钙钛矿吸收体。此外，具有能量色散 X 射线 (EDX) 分析的扫描电子显微镜 (SEM) 显示 ITO 和镀铜之间形成了紧密的界面。使用自钝化铝作为掩模的额外电镀方法允许在 PSC 上产生明确定义的 30 μm 宽 Cu 触点。这种电镀工艺允许在具有 TCO 的钙钛矿硅异质结串联太阳能电池的两侧同时电镀低电阻 Cu 网格，而与基板尺寸无关。

更新日期：2021-09-09

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