Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
Publication date: 30th March 2023
Lead halide perovskites are emerging optoelectronic materials, especially interesting for photovoltaics because of their bandgap tunability. The latter makes them a suitable candidate for tandem solar cells, as their bandgap energy can be adjusted to match the solar spectrum, maximizing the amount of harvested light. This, in turn, requires the utilization of so-called wide-bandgap perovskites – materials with bandgap energy larger than 1.65 eV. But everything comes at a price. In this case, the latter is their photo-instability, which manifests as an effect called light-induced halide segregation, separating initially mixed perovskite phase into a set of new ones. In this work, we went down the rabbit hole to get an insight into the dynamics of the process, as well as to quantify the impact of the layer stack. Using a home-built setup, we traveled through time and quantified the properties of de-mixed perovskite systems in order to learn about the factors driving light-induced halide segregation. Join us on this fantastic journey through time on a minute scale.
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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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