Hydrazone-based hole transporting material prepared via condensation chemistry as alternative for cross-coupling chemistry for perovskite solar cells†,Molecular Systems Design & Engineering

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Hydrazone-based hole transporting material prepared via condensation chemistry as alternative for cross-coupling chemistry for perovskite solar cells†
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2018-07-04 00:00:00 , DOI: 10.1039/c8me00023a
Michiel L. Petrus _{1,

2,

3,

4} , Maximilian T. Sirtl _{1,

2,

3,

4} , Anna C. Closs _{1,

2,

3,

4} , Thomas Bein _{1,

2,

3,

4} , Pablo Docampo _{5,

6,

7,

8}

Affiliation

Perovskite solar cells have shown an exceptionally fast increase in performance. So far, most high performing devices comprise expensive hole transport material (HTM) which are synthesized using tedious synthetic procedures, resulting in a high cost and thereby limit the potential use in large-scale applications. In a quest to find low-cost chemistry to link the building blocks, we explore hydrazone-based small molecules in this work. These materials can be synthesized in a simple condensation reaction, with water being the only side product leading to a low material cost of less than $10 per g. When used as hole transporting layers in perovskite solar cells, highly reproducible performance was obtained, similar to state-of-the-art materials, with the main difference being a small open-circuit voltage loss due to increased interfacial recombination. Thus, we show that hydrazone-based materials have the potential to compete in performance with materials obtained via cross-coupling reactions at a fraction of their cost.

中文翻译：

通过缩合化学制备的基空穴传输材料，可替代钙钛矿太阳能电池的交叉耦合化学†

钙钛矿太阳能电池已表现出异常快速的性能提升。迄今为止，大多数高性能器件都包含昂贵的空穴传输材料（HTM），该材料使用繁琐的合成程序进行合成，导致成本高昂，从而限制了在大规模应用中的潜在用途。为了寻找低成本的化学方法来连接组成部分，我们在这项工作中探索了基于的小分子。这些材料可以通过简单的缩合反应合成，而水是唯一的副产物，从而导致材料成本低至每克不到10美元。当用作钙钛矿太阳能电池中的空穴传输层时，可获得与现代技术类似的高度可复制的性能，主要区别是由于界面重组增加而造成的开路电压损失小。因此，我们表明基材料具有与所获得材料竞争性能的潜力通过交叉偶联反应，其成本仅为其一小部分。

更新日期：2018-07-04

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