Proceedings of nanoGe Fall Meeting19 (NFM19)
DOI: https://doi.org/10.29363/nanoge.nfm.2019.275
Publication date: 18th July 2019
Negative emissions are an integral part of most scenarios for limiting global warming to 2 °C or below. However, the feasibility of the various technological approaches to remove dilute CO2 from the atmosphere for permanent storage is still unclear.[1,2] While natural photosynthesis is scalable and features established products for long-term storage, its low conversion efficiency translates to vast footprints in terms of the required area.[1,3] Here, photoelectrochemical approaches could reduce the conflict with food production as they provide significantly higher efficiencies, require less water, and do not depend on arable land.[3] We give an overview of the approaches discussed in the literature, from negative-emissions solar hydrogen production[2] to photoelectrochemical CO2 reduction. Furthermore, we introduce a definition of solar-to-carbon efficiency, which is better suited to rank approaches for negative emissions. We show that the most efficient products in terms of CO2 removal efficiency deviate from those considered for solar fuels, which therefore require new absorber-catalyst combinations. Finally, we discuss feasibility, land footprint, and costs of these photoelectrochemical carbon sinks for the -10 Gt/year target in 2050.
We thank the fellowship programme of the German National Academy of Sciences Leopoldina, grant LPDS 2015-09 (MMM), the German Research Foundation (RE3994-2/1, KR) and the Volkswagen Foundation for funding.
nanoGe 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.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference 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.
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.