Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
DOI: https://doi.org/10.29363/nanoge.hopv.2023.207
Publication date: 30th March 2023
The efficiencies of organic photovoltaics (OPVs) - while lower than the conventional silicon solar cells - have seen a sharp increase in recent years thanks to the development of new non-fullerene acceptors. However, achieving long-term performance stability in the higher efficiency OPVs is still challenging. This is because best performing bulk heterojunction devices are based on blends of different materials that demix when exposed to light and heat, leading to a strong reduction in conversion efficiency after as little as a few hours in some cases (Mateker & McGehee, 2017). A promising approach to tackle the stability issue is the use of single-component macromolecular semiconductors (Review by Roncali, 2021), which have recently showed significant improvements in conversion efficiency reaching >11% in a block co-polymer system while maintaining good performance stability (Wu et al., 2021). By combining the state-of-the art polymer donors and non-fullerene acceptors into block co-polymers, we hope to gain a deeper physical understanding of how charge generation and transport works in those systems. For this we are investigating block co-polymer systems based on the PBDB-T and PYT material groups. On the one hand we are using chemical modifications to the building blocks of the polymers to tune the energetics in the system in order to understand the interplay between through-space and through-bond charge transfer. On the other hand, we are modifying the large-scale structure of the polymers by tuning the length of the donor and acceptor segments to make a comparison to the polymer-polymer bulk heterojunction. These new material systems are analysed using optoelectronic measurements and modelling to better understand the morphological ordering in block co-polymers and the impact the morphology has on the device properties. Combining the advances in efficiency thanks to novel chemical design of donors and acceptors with the long-term stability of the block co-polymer structure will hopefully lead to more industrially viable alternatives to the popular bulk heterojunction devices (He et al., 2022).
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.