Roll-to-roll slot-die coated P–I–N perovskite solar cells using acetonitrile based single step perovskite solvent system,Sustainable Energy & Fuels

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Roll-to-roll slot-die coated P–I–N perovskite solar cells using acetonitrile based single step perovskite solvent system
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2020-05-04 , DOI: 10.1039/d0se00460j
Daniel Burkitt _{1,

2,

3,

4,

5} , Rahul Patidar _{1,

2,

3,

4,

5} , Peter Greenwood _{1,

2,

3,

4,

5} , Katherine Hooper _{1,

2,

3,

4,

5} , James McGettrick _{1,

2,

3,

4,

5} , Stoichko Dimitrov _{1,

2,

3,

4,

5} , Matteo Colombo _{1,

2,

3,

4,

5} , Vasil Stoichkov _{1,

2,

3,

4,

5} , David Richards _{1,

2,

3,

4,

5} , David Beynon _{1,

2,

3,

4,

5} , Matthew Davies _{1,

2,

3,

4,

5} , Trystan Watson _{1,

2,

3,

4,

5}

Affiliation

Roll-to-roll coating of all active layers is demonstrated for a P–I–N perovskite solar cell stack, using a single step perovskite ink with an acetonitrile solvent system and flexible plastic substrate. A slot-die coating roll-to-roll process (with a common coating speed for all layers) is developed by using appropriate length meniscus guides as part of the coating head for each ink rheology. High performance devices are demonstrated with four roll-to-roll slot-die coated layers and evaporated top electrode. The drying conditions of the perovskite layer are optimized and found to be critical to achieving good performance. Multi solvent blend systems for the electron collection layer are developed that are more industrially compatible than the commonly used chlorobenzene solvent system and make use of a gradient of solvent volatilities to give both good macro film formation and rapid drying. A stabilised power conversion efficiency of 12.2% is demonstrated, that is the highest reported to date for devices with all layers other than the top electrode deposited roll-to-roll. This work demonstrates the feasibility of a roll-to-roll fabrication process for perovskite solar cells that could be transferred to a fully inline roll-to-roll process with all coating and drying stages made sequentially on one line running at a common coating speed and further demonstrates the potential to produce high efficiency photovoltaics using roll-to-roll fabrication methods.

中文翻译：

使用基于乙腈的单步钙钛矿溶剂系统的卷对卷狭缝模头涂覆的P–I–N钙钛矿太阳能电池

演示了P–I–N钙钛矿太阳能电池堆的所有活性层的卷到卷涂层，使用了一步法钙钛矿油墨，乙腈溶剂系统和柔性塑料基材。通过使用适当长度的弯月形导向器作为每种油墨流变学的涂布头的一部分，开发了狭缝模头涂布卷对卷工艺（所有层的涂布速度都相同）。演示了具有四个卷对卷狭缝模头涂层层和蒸发的顶部电极的高性能器件。对钙钛矿层的干燥条件进行了优化，发现对于获得良好的性能至关重要。开发了用于电子收集层的多溶剂共混体系，该体系比常用的氯苯溶剂体系在工业上更具兼容性，并利用溶剂挥发性梯度来提供良好的宏观成膜性和快速干燥。结果表明，电源转换效率达到了12.2％的稳定水平，这是迄今报道的除顶部电极卷到卷以外所有层都具有最高层的器件的最高记录。这项工作证明了钙钛矿型太阳能电池的卷对卷制造工艺的可行性，该工艺可以转移到完全在线的卷对卷工艺中，所有涂覆和干燥阶段均在一条线上以相同的涂覆速度依次进行，并且进一步展示了使用卷对卷制造方法生产高效光伏电池的潜力。

更新日期：2020-06-30

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