Proceedings of nanoGe Fall Meeting 2021 (NFM21)
DOI: https://doi.org/10.29363/nanoge.nfm.2021.212
Publication date: 23rd September 2021
Light-matter interaction between a molecular transition and a confined electromagnetic field of an absorber inside a resonator can modify the optical and electrical properties of molecules, which is relevant to improve solar devices.[1] When strong coupling regime is reached, two new hybrid states separated in energy, so-called polaritonic states, are formed instead of independent eigenstates, with the energy separation between them being proportional to the coupling strength, which is known as Rabi splitting. This modification of the energy spectra of the system, which have been already demonstrated in many configurations, offers new possibilities for controlled impact on various fundamental properties of coupled matter (rate of chemical reactions, conductivity of organic semiconductors).[2]
Recently, Subphthalocyanines (SubPcs)-based molecules have been integrated in a polaritonic organic solar cell that behaves as an optical resonator in order to modify device’s absorption onset and tune optoelectronic properties of the devices.[3] Therefore, understanding how the different electronic transitions of an absorber can couple to the resonant modes of a solar polaritonic device is an important issue that deserves to be addressed.
In view of this, we investigate how two electronically different transitions, namely charge transfer (CT)-band and excitonic Q-band, of a subphthalocyanine derivative (F12-SubPc-TCBD-aniline) within an optical cavity, respond to variations in the resonant modes of such cavity. By coupling the cavity resonance with one of the two electronic transitions we observe different coupling regimes, which give rise to very different spectral and directional light harvesting features. Also, by modelling the system under analysis, we can discriminate the productive absorption occurring in the SubPc layer from the parasitic one due to the presence of metallic films in the structure, which allow us to estimate the potential optical losses that may occur in a light harvesting device devised as an optical resonator. [4]
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.