Abstract In this report a new series of metal Schiff base complexes (MMePy, M = Pt, Pd and Cu) were synthesized and used as hole transport materials (HTMs) in perovskite solar cells (PSCs), as an attempt to realize the hole extraction and transport ability of these materials in PSCs. The energy levels of the materials can be easily tuned by changing the central metal, leading to a better alignment with the perovskite absorber. The well matching of energy level along with lower surface roughness and higher crystallinity of the thin film give rise to the highest PCE of 8.07 % for the CuMePy-based device among the MMePy-based devices. The result indicates the promising application of this series of metal complexes for the use as HTM in PSCs.

中文翻译：

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钙钛矿太阳能电池中基于金属席夫碱配合物的空穴传输层

摘要 在本报告中，合成了一系列新的金属席夫碱配合物（MMePy，M = Pt、Pd 和 Cu），并将其用作钙钛矿太阳能电池（PSC）中的空穴传输材料（HTM），以尝试实现空穴提取。以及这些材料在 PSC 中的运输能力。通过改变中心金属可以轻松调整材料的能级，从而更好地与钙钛矿吸收体对齐。在基于 MMePy 的器件中，能级的良好匹配以及薄膜的较低表面粗糙度和较高结晶度使基于 CuMePy 的器件的 PCE 达到 8.07%。结果表明这一系列金属配合物在 PSC 中用作 HTM 的应用前景广阔。