Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.300
Publication date: 18th July 2023
Traditional electronic devices are made of non-renewable and often toxic materials, which can lead to serious environmental contamination upon their disposal. A promising strategy for producing sustainable electronics is the direct writing of laser-induced graphene (LIG) electrically conductive patterns on biological and bio-based substrates. However, high ablation rates, the need to use controlled atmosphere, toxic fire retardants and multiple lasing steps limit the applicability of conventional LIG processes to produce sustainable electronic devices.
We have introduced iron-catalyzed laser-induced graphitization (IC-LIG) as an innovative technique enabling to engrave large-scale electrically conductive patterns on thermally sensitive substrates such as wood and wood-derived materials [1]. Our approach makes use of an aqueous bio-based coating, inspired by the historical iron-gall ink, which protects the wood surface from laser ablation and thermal damage while preserving its mechanical properties. Thanks to our approach, it is possible to engrave highly conductive (up to 2500 S m-1) patterns even on thinnest wood veneers (> 400 µm) and cellulose paper within a single lasing step in ambient atmosphere using a conventional CO2 laser setup.
Here, we explore further the possibilities offered by our IC-LIG approach by elucidating the catalytic effect of iron under different lasing conditions. We can control the iron-carbon composite structure at the nano- and microscale level, e.g., by tuning the concentration of iron in the ink. This, in turn, allows us to tune the iron phases in the resulting IC-LIG materials. By precisely controlling the laser parameters and setup we are able to fabricate bio-inspired surface patterns at the meso- and macroscale, controlling the structure as well as the electrical properties on a multiscale level, allowing us to fabricate sustainable electrodes for prospective uses as energy storage and electrochemical devices.
[1] C. H. Dreimol et al., Nat. Commun. 2022, 13, 3680 (12 pp.).]
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.