Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
DOI: https://doi.org/10.29363/nanoge.hopv.2018.162
Publication date: 21st February 2018
Optical design of perovskite solar cells (PSCs) has been demonstrated to be very relevant to push the performance of this emerging technology.[1, 2, 3]
Recently, the research interest has put under the spotlight ABX3 perovskites for their application in multifunction devices that can surpass the Shockley-Queisser (SQ) limit.[4,5] In our talk we will discuss about the possibilities that an optical model opens to improve the efficiency of perovskite-based tandem solar cells. We make use of semi-analytical models based on the transfer matrix to describe light distribution within the device. We will show how design provides a straightforward path towards architectures in which current matching is attained, eventually preventing the field from time-consumable trial and error experiments. Then, we will identify which are the effects that the different components have in the electro-optical performance of the device. Based on this, we will conclude with a roadmap towards the achievement of optically optimised tandem solar cells, where parasitic absorption and reflectance losses are minimized. We merge our optical model with a genetic algorithm to fully optimise a FA0.83Cs0.17PbI1.8Br1.2/MAPb0.15Sn0.85I3 tandem device that outperforms >30% efficiency. This kind of approach promises to be of great importance for the immediate future of this rapidly growing field.
[1] M. Anaya et al., Journal of Physical Chemistry Letters (2015), 6, 48-53.
[2] W. Zhang & M. Anaya et al., Nano Letters (2015), 15, 1698-1702.
[3] J.-P. Correa-Baena & M. Anaya et al. Advanced Materials (2016), 28, 5031–5037.
[4] M. Anaya & J.-P. Correa-Baena et al., Journal of Materials Chemistry A (2016), 4, 11214–11221.
[5] M. Anaya et al., Joule (2017), 4, 769-793.
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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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