Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Lead-halide perovskite solar cells have been the subject of much research in the last few years due to their excellent absorption and ambipolar conduction [1–3]. Most of the research has used methylammonium and/or formamidinium as the cation to make hybrid organic-inorganic perovskite materials [4–6]. In contrast, fully inorganic caesium lead-halide perovskites have been known since 1893 [7], and have been prepared as crystals [8], nanocrystals [9], and in thin films by thermal evaporation [10]. The caesium lead mixed halide perovskites are known to form solid solutions [11], and exhibit a range of colours (see Figure 1) and hence a tuneable absorption onset. Here we present a detailed comparison between caesium and methylammonium lead-halide perovskite materials and show that the caesium materials have potential for use in tandem solar cells.
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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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