Publication date: 10th April 2024
Achieving facile, non-destructive chemical analysis techniques that can provide microscopic insights into the phase evolution of materials is essential for creating high-performance devices for energy harvesting and storage, among other applications. However, many of the most powerful techniques, such as isotopic ion exchange methods, in situ TEM, and synchrotron radiation-based techniques, are complex and limit easy access to crucial data.
Raman spectroscopy is a fast, non-destructive optical technique that provides quantitative chemical and structural information about the material under investigation. However, conventional Raman microscopy is diffraction-limited and unable to provide spatial resolution below ~ 1 µm. To overcome this limitation, we employ Tip-Enhanced Raman Spectroscopy (TERS), which combines the chemical sensitivity of Raman spectroscopy with high spatial resolution of scanning probe microscopy (SPM) and enables chemical imaging of surfaces at the nanometer length scale.
In this talk, we will discuss the fundamentals of TERS and its recent advancements in the implementation of the technique for electroceramic materials. We will showcase our latest results on Li-ion battery research using TERS, both ex-situ and operando configurations. The technique's spatial resolution capabilities will be highlighted, showing, for instance, the phase evolution at grain boundaries in battery cathodes with a resolution < 20 nm when cycled in an aqueous electrolyte.[1] We will also show our recent advancements in implementing operando TERS in battery cathodes with outstanding spatial resolution supported by experimental modeling emphasizing again the differences between grain and grain boundaries. Our efforts aim to demonstrate the versatility of TERS as a new approach for nanometric chemical insights of electroceramics in the energy field.
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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.