Enhancement of the internal quantum efficiency in strongly coupled P3HT-C 60 organic photovoltaic cells using Fabry-Perot cavities with varied cavity confinement.

Autor:	de Jong LMA; Department of Applied Physics and Science Education, Eindhoven Hendrik Casimir Institute, and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands., Berghuis AM; Department of Applied Physics and Science Education, Eindhoven Hendrik Casimir Institute, and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands., Abdelkhalik MS; Department of Applied Physics and Science Education, Eindhoven Hendrik Casimir Institute, and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands., van der Pol TPA; Department of Chemical Engineering and Chemistry, and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands., Wienk MM; Department of Chemical Engineering and Chemistry, and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands., Janssen RAJ; Department of Chemical Engineering and Chemistry, and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands., Gómez Rivas J; Department of Applied Physics and Science Education, Eindhoven Hendrik Casimir Institute, and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
Jazyk:	angličtina
Zdroj:	Nanophotonics [Nanophotonics] 2024 Jan 08; Vol. 13 (14), pp. 2531-2540. Date of Electronic Publication: 2024 Jan 08 (Print Publication: 2024).
DOI:	10.1515/nanoph-2023-0613
Abstrakt:	The short exciton diffusion length in organic semiconductors results in a strong dependence of the conversion efficiency of organic photovoltaic (OPV) cells on the morphology of the donor-acceptor bulk-heterojunction blend. Strong light-matter coupling provides a way to circumvent this dependence by combining the favorable properties of light and matter via the formation of hybrid exciton-polaritons. By strongly coupling excitons in P3HT-C 60 OPV cells to Fabry-Perot optical cavity modes, exciton-polaritons are formed with increased propagation lengths. We exploit these exciton-polaritons to enhance the internal quantum efficiency of the cells, determined from the external quantum efficiency and the absorptance. Additionally, we find a consistent decrease in the Urbach energy for the strongly coupled cells, which indicates the reduction of energetic disorder due to the delocalization of exciton-polaritons in the optical cavity. Competing Interests: Conflict of interest: Authors state no conflicts of interest. (© 2023 the author(s), published by De Gruyter, Berlin/Boston.)
Databáze:	MEDLINE
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