Proceedings of Online International Conference on Hybrid and Organic Photovoltaics (OnlineHOPV20)
Publication date: 22nd May 2020
The light-driven conversion of small molecules such as water and CO2 into higher-value chemicals (e.g. H2, CO) represents an attractive alternative for simultaneous energy harvesting and storage.[1,2] While great progress has been made in the development of suitable light absorbers, their integration with catalysts into photoelectrochemical (PEC) devices for the production of the so-called solar fuels still poses challenges. Beside the performance and stability of small prototypes, their scalability is a major factor which must be considered for commercial applications.
In this contribution, we address those issues by developing approaches to synthesize and characterize such devices on a medium- and large-scale. For this purpose, the water splitting performance of 0.25-10 cm2 perovskite-BiVO4 PEC tandems is investigated in a versatile 3D-printed PEC cell.[3,4] By employing state-of-the-art triple cation perovskite photoabsorbers, a solar-to-hydrogen conversion of 0.35% can be achieved under no applied bias. Their potential for further up-scaling is exemplified by fabricating 25 and 300 cm2 doped BiVO4 panels from bismuth (transition metal) polyoxovanadate single-source precursors (SSPs).[5]
Looking beyond water splitting, we will also discuss our recent progress on the development of PEC devices that can couple the more challenging CO2 reduction to water oxidation. By interfacing the perovskite photocathodes with an earth abundant molecular cobalt catalyst, selective aqueous CO2 reduction can be maintained for one day at light intensities as low as 0.1 Sun, providing potential pathways for maximizing daylight utilisation. The resulting perovskite-BiVO4 PEC tandems sustain an unprecedented bias-free syngas production for three days, operating as standalone artificial leaves in neutral pH solution.[6] The overall findings are applicable to a wide range of photoelectrochemical systems,[7] with the ultimate goal of contributing towards a circular carbon economy via photoelectrocatalysis.
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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.