Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Publication date: 6th February 2020
The rise of the efficiency of perovskite solar cells from 3.8% to 23.3% in less than 10 years has shaken up the scientific photovoltaic community. A comprehensive understanding of fundamental properties of these intriguing materials is paramount for further progress in device applications. In this work we investigate how the charge carrier cooling dynamics in MAPbI3 thin films is affected by hydrostatic pressure up to 400MPa. In particular, charge cooling is probed by pump-probe transient absorption spectroscopy in the range of 0.2-700ps. We find a dramatic increase of carrier temperature at the picosecond timescale when the pressure is increased. We also investigate the effect of pressure on cooling timescales, as recently the slow cooling in those material has sparkled significant interest. Furthermore, we present a first insight on how the cooling is influenced by the phase transition, which occurs at 325 MPa for this perovskite. Our findings will contribute to the understanding of ultrafast carrier dynamics of metal halide perovskites.
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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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