| Grant number: | 22/15666-3 |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| Start date: | April 01, 2023 |
| Status: | Discontinued |
| Field of knowledge: | Physical Sciences and Mathematics - Physics - Condensed Matter Physics |
| Principal Investigator: | Paulo Barbeitas Miranda |
| Grantee: | Anderson Emanuel Ximim Gavim |
| Host Institution: | Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil |
| Associated research grant: | 14/50869-6 - INCT 2014: on Organic Electronics, AP.TEM |
| Associated scholarship(s): | 25/04462-6 - Understanding Environment Stability for High Efficiency OSCs, BE.EP.PD |
Abstract The increase in global energy consumption and its impacts on the environment point to the need of developing and using new energy sources that are clean and renewable. In this sense, photovoltaic solar energy has emerged as a promising source, and organic photovoltaic devices stand as a concrete alternative, as they have already shown (in the laboratory) efficiencies of around 18%, combined with characteristics such as flexibility, lightweight, and low processing cost. These high efficiencies began to be achieved after the introduction of new acceptor molecules, in the last 4 years, replacing the traditional acceptors based on fullerene derivatives (C60, C70). In this post-doctoral proposal, we aim to master the techniques for manufacturing high-efficiency organic solar cells, based on non-fullerene acceptors, and to investigate the physical mechanisms associated with this improved performance. As multilayer devices, not only research on materials for the active layer is relevant, but it is also important to optimize the electrical behavior of the electron and hole transport layers, and to prevent energy barriers for conduction at the layer interfaces. Therefore, we will combine traditional techniques for electrical characterization of devices with studies of electrical and photoinduced absorption transients, which may contribute to the understanding of the processes of charge extraction and recombination, the latter being the main mechanism responsible for the efficiency loss in these organic solar cells. This project will also benefit from the collaboration of researchers from the Department of Chemistry and Physics of the Universidade Tecnológica Federal do Paraná (UTFPR), who will provide some acceptor materials to be used in the project, in addition to those already commercially available. Therefore, besides mastering the manufacture of these solar cells in Brazil, the project may also significantly contribute to the understanding of the mechanisms responsible for their high efficiency, enabling future studies for an eventual further improvement of their energy efficiency. | |
| News published in Agência FAPESP Newsletter about the scholarship: | |
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