Within recent years, metal halide perovskite solar cells (PSCs) attracted enormous attention in research and industries as a future sustainable technology to harvest solar energy at very low cost. The material has demonstrated outstanding optoelectronic properties as well as the tunability of the perovskite bandgap over a wide range of energies by compositional engineering of the crystal structure. These properties enable Perovskite-Perovskite multijunction solar cells, which can harvest a wide range of the sun spectrum at very high efficiencies. The technology combines a high bandgap with a low bandgap perovskite absorber layer and offers the prospects of becoming a fully printable, low-cost and very high efficient thin-film photovoltaic technology. However, up to date, this technology is limited by the low performance and the instabilities of low bandgap (LBG) PSCs. In this project, this key challenge will be tackled by engineering LBG perovskites, both in the 2D as well as the 3D crystal structures, to reach a stable perovskite material of high optoelectronic quality. The ultimate goal is to develop efficient and stable LBG PSCs which will enable a Perovskite-Perovskite multijunction solar cell with power conversion efficiency (PCE) of >27% and >100 hours of stable power output. This will be a major landmark in the development of the photovoltaic technology and also, this fellowship would be an outstanding opportunity to me to promote my knowledge in the photovoltaic science and technology in an experienced and professional center.
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