Publication date: 10th April 2024
Materials engineering through thin-film nanostructuring represents an ideal playground for the investigation of model systems with novel or improved functionalities. In the context of high-temperature cathode materials, improved kinetics has been achieved, notably through strategies such as grain boundary engineering and heterostructuring.1,2,3 Despite these advancements, however, an open question pertains to the practical relevance of such structures in real electrochemical devices. Existing constrains such as processability and long-term thermochemical stability have considerably hindered, to date, the application of advanced thin-film technology to high-temperature energy devices like solid oxide cells. This contribution addresses these challenges by presenting practical examples that demonstrate how the strategic introduction of defects can be leveraged in order to optimize the performance-stability trade-off in electrochemically active films for oxygen reduction reaction. For 0-dimensional defects, we will introduce results on a combinatorial study for the (La,Sr)(Mn,Fe,Co)O3 system. Employing a suite of automated and semi-automated characterization tools, we were able to map the electrochemical behavior of the ternary compositional space, demonstrating that aliovalent cationic substitution is an effective tool for balancing high electrochemical activity and enhanced thermal stability. Another example showcases our latest findings on perovskite/fluorite self-assembled nanostructures.4 Here depending on the materials of choice, distinct long-range orders are obtained. Despite the architecture variations, a general increase in the oxygen-reduction kinetics (over one order of magnitude) is achieved with respect to single-phase reference materials. Furthermore, the long-term stability of the material operating under real conditions is demonstrated. Finally, the successful implementation of such thin-film systems as high-performance cathodes in full solid-oxide cells is shown, highlighting the potential of thin-film engineering for practical implementation.
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.