Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
Perovskite solar cells (PSCs) are currently considered for scaling up and commercialization. However, most of the lab scale methods are rather difficult to scale up or poorly environmental friendly. The highest efficient [1] are prepared using the antisolvent method, which wastes a large amount of solvent to drive the perovskite film crystallization. Alternative solvent-free methods have been proposed, but they are not as effective as the antisolvent method. The antisolvent is so effective because it enables preparing perovskite film with large crystals and a uniform coverage of the substrate, which are essential to prepare highly efficient devices.
Here we propose Flash Infrared Annealing (FIRA) [2] and a solvent-free method to control the perovskite film crystallization. FIRA is able to complete the perovskite film crystallization in less than two seconds. Such fast crystallization results in micrometer size perovskite crystals uniformly distribute on the substrate. Using FIRA, we prepared perovskite solar cells with a champion 18 % stabilized power conversion efficiency. We discuss the FIRA induced crystallization mechanism and we will show that it is compatible with the large-scale production of perovskite film on various substrates. Also we present FIRA to make inorganic perovskite solar cells and its functionality as method to growth up different perovskite films composition.
References
[1] M. Saliba, T. Matsui, K. Domanski, J.-Y. Seo, A. Ummadisingu, S. M. Zakeeruddin, J.-P. Correa-Baena, W. R. Tress, A. Abate, A. Hagfeldt, M. Grätzel, Science 2016, 354, 206.
[2] S. Sanchez, X. Hua, N. Phung, U. Steiner, A. Abate, Advanced Energy Materials, 1702915.
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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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