Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
DOI: https://doi.org/10.29363/nanoge.hopv.2022.195
Publication date: 20th April 2022
The presence of mobile ionic charge is considered the underlying cause of hysteresis and many slow transient effects in metal halide perovskite solar cells. We have developed electroabsorbance techniques that directly measure the dynamics of internal electric fields in the perovskite layer. These confirm that transient optoelectronic behaviour of perovskite devices is directly related to the changing polarisation fields attributed to redistribution of ionic charge. However, despite the transient behaviour and hysteresis being understood in general (if not always in detail), the implications of mobile charge on the steady state properties of perovskite devices is often overlooked, particularly when hysteresis is not observed in device performance. Here I will consider some of the consequences of mobile ions, and their interactions with interfaces, for the underlying properties of devices under stable operation, and assess at what concentrations do the impact of mobile ionic charge become significant.
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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.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
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