Proceedings of 13th Conference on Hybrid and Organic Photovoltaics (HOPV21)
Publication date: 11th May 2021
Efficient dye-sensitized photocathodes offer new opportunities for converting sunlight into storable energy cheaply and sustainably.[1] We are developing dye-sensitized NiO cathodes for light-driven reduction of carbon dioxide or water to high energy products (solar fuels) using the lessons we have learnt from solar cells.[2] This strategy combines the selectivity of a molecular catalyst with the charge transport properties of inorganic semiconductors in a robust device. When photoelectrodes are assembled in a tandem configuration (see figure), the electrons released in water oxidation at the photoanode can be consumed by the photocathode in the reduction of e.g. H+ to H2 or CO2 to CO. Generating hydrogen on one electrode and oxygen on another enables the two gasses to be collected separately. The device performance can be optimised by tuning the properties of the individual components responsible for light absorption, charge transport and catalysis, rather than relying on one material to have all the necessary credentials. The electron-transfer dynamics are key to the performance and a major challenge is slowing down charge recombination between the photoreduced dye and the oxidised NiO so that chemistry can take place.[4] Highlights from recent work examining charge-transfer at the interface between NiO and new supramolecular photocatalysts using transient absorption spectroscopy and time-resolved infrared spectroscopy will be presented [4-7]. The effect of the environment on the kinetics will be discussed [5,6]. The relationship between the structure dynamics and performance of the photoelectrocatalytic devices will be summarized [2].
We thank the The North East Centre for Energy Materials EP/R021503/1, International Network on Polyoxometalate Science for Advanced Functional Energy Materials EP/S031170/1, ERC starting grant, p-TYPE 715354. Leverhulme Trust for a project grant RGS108374, STFC for access to the CLF ULTRA facility and LaserLab Europe LLC002553 for transient spectroscopy, NEXUS XPS facility for conducting the XPS measurements and surface characterisation by ToF-SIMS measurements.
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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.