Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
DOI: https://doi.org/10.29363/nanoge.hopv.2022.078
Publication date: 20th April 2022
In recent years Perovskite Solar Cells have been investigated as promising photoelectrodes for light-driven water splitting. In this approach a complete solar cell is submerged in water where, under illumination and bias voltage, it can be used to oxidise water to form oxygen (n-i-p cell used as a photoanode) or reduce protons to form hydrogen (p-i-n cell used as a photocathode) or both (dual cell). Although excellent photovoltaic materials, 3D lead halide perovskites are notoriously sensitive to moisture and the challenge is to protect the perovskite layer so that the water does not infiltrate and disintegrate the material. A number of protection strategies have been developed, including metal encapsulation (e.g. Ni, Ti, Field’s metal) and oxide coatings. In 2019 we showed that simple graphite layers could protect the solar cells for up to 30 hours of operation underwater. By modifying the graphite surface with an iridium-based water oxidation catalyst we were able to reduce the overpotential for water oxidation and increase the Faradaic efficiency of light-driven water splitting. In this talk I will focus on our latest results. We have improved our system to get more than 140 hours of stability underwater and we have used a variety of methods to increase the surface loading of the Ir catalyst. As we can routinely stabilise the cells for such long periods we have identified and addressed failure mechanisms that are unrelated to the dissolution of the perovskite layer.
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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.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.