Proceedings of 13th Conference on Hybrid and Organic Photovoltaics (HOPV21)
Publication date: 11th May 2021
Ion motion remains an important topic in halide perovskite semiconductors. We discuss measurements of light- and bias-driven ion motion in halide perovskites, from early chemical evidence confirming photoinduced halide motion using imaging mass-spectroscopy, to recent scanning probe studies of ion motion under bias. Importantly, we show that the ability of bias stress (poling) to induce non-radiative defects due to ion migration hinges on a combination of both ion motion and redox processes associated with injected charge carriers. We study low-dimensional Ruddlesden-Popper phases that are of interest as materials for potentially improved stability and reduced ion motion, and we find that ion motion exists in 2D perovskite phases, and that it depends on the layer number and dimensionality of the perovskite.
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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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