Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
A simple, low-cost, versatile, and potentially scalable coating method is proposed for the fabrication of hybrid organic-inorganic perovskite solar cells. We describe a highly promising technique, the megasonic spray coating, based on an aerosol coating method with a megasonic nebulizer. Using this technique, we fabricated efficient and reproducible large-area planar perovskite solar cells. The coating is based on a mist precursor and can easily be carried out at low temperature, in a solvent free environment, and at ambient conditions. We can effectively control the volume of the CH3NH3PbI3 precursor solution and the reaction temperature, which affect the quality of the perovskite harvester layer and the performance of the perovskite solar cells. In optimized conditions, our devices reach a maximum efficiency of 16.9%, with an average efficiency of 16.4%. We also demonstrate the applicability of megasonic spray coating to the fabrication of large-area solar cells (1 cm2), with a power conversion efficiency of 14.2%.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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