Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV24)
DOI: https://doi.org/10.29363/nanoge.hopv.2024.147
Publication date: 6th February 2024
The phenomenon of mode coupling holds significance across various domains of solid-state physics. In the context of organic crystals, understanding the implications of coupled lattice modes is crucial for unraveling the mechanisms behind phase transformations and electron-phonon interactions. In my talk, I will explore how the coupling between vibrational modes is evident in inelastic light scattering. Through experimental case studies, I will illustrate how employing mode coupling models in analyzing Raman spectra enables us to shed light on critical phenomena, such as how a phase transition arises from the thermal population of vibrational states.
In the initial segment of my talk, I will demonstrate that the polarization dependence of Raman scattering in organic crystals at finite temperatures necessitates a description through a fourth-rank tensor formalism. This expansion beyond the conventional second-rank Raman tensor is represented by off-diagonal components in the crystal self-energy on the light scattering process. In the latter part, I will discuss the temperature-dependent evolution of vibrational modes in α α-glycine crystals. Despite its straightforward structure and the absence of known phase transitions, I will present evidence of a phase transition manifesting within the vibrational modes closely associated with the potential surface of its hydrogen bonds.
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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.