Scaling up high efficiencies to larger photoelectrode areas by photoelectrochemical Schlenk cell functionalisation
2023-12-18

Scaling up high efficiencies to larger photoelectrode areas by photoelectrochemical Schlenk cell functionalisationMatthias May aa Eberhard Karls Universität Tübingen, Auf der Morgenstelle, 18, Tübingen, GermanyMaterials for Sustainable Development Conference (MATSUS)Proceedings of MATSUS Spring 2024 Conference (MATSUS24)#SolFuelScale - Practical aspects of solar fuel production: scalability, stability & outdoor operationBarcelona, Spain, 2024 March 4th - 8thOrganizers: Fatwa Abdi and Virgil AndreiInvited Speaker, Matthias May, presentation 384DOI: https://doi.org/10.29363/nanoge.matsus.2024.384Publication date: 18th December 2023High conversion efficiencies are key for solar fuel technologies to compete with natural photosynthesis. Here, photoelectrochemical approaches should be in a similar efficiency range as the combination of photovoltaics with electrolysis. So far, the highest photoelectrochemical solar-to-hydrogen efficiencies (STH) are achieved using multi-junction solar absorbers based on the III-V semiconductor material class. Reported areas, however, only lie in the range of up to 0.3 cm2 as surface defects quickly lead to corrosion and failure of the device. I will present our latest results where we demonstrate significantly higher areas at >18% STH using a photoelectrochemical surface functionalisation approach in a Schlenk cell. The higher level of interface quality and reproducibility is a prerequisite for scale-up and optical in situ control with electrochemical reflection anisotropy spectroscopy contributes to this development [1,2]. Furthermore, I will discuss some of the challenges and potential pitfalls related to the benchmarking of multi-junction solar water splitting devices which are still present in the literature. Acknowledgements:This work was supported by the German Bundesministerium für Bildung und Forschung (BMBF), project ''H2Demo'' (no. 03SF0619K) as well as the German Research Foundation (DFG) under project number 434023472. © FUNDACIO DE LA COMUNITAT VALENCIANA SCITOnanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.nanoGe Fall MeetingnanoGe Fall Meeting (NFM) is a multiple symposia conference celebrated yearly and focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.nanoGe Spring MeetingThis conference is a unique series of symposia focused on advanced materials preparation and fundamental properties and their applications, in fields such as renewable energy (photovoltaics, batteries), lighting, semiconductor quantum dots, 2-D materials synthesis and semiconductors fundamentals, bioimaging, etc.International Conference on Hybrid and Organic PhotovoltaicsInternational 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 OptoelectronicsThe 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.International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and OptoelectronicsThe 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.