Russo, M., Georgiou, K., Genco, A. et al. (6 more authors) (2024) Direct evidence of ultrafast energy delocalization between optically hybridized J‐aggregates in a strongly coupled microcavity. Advanced Optical Materials, 12 (25). 2400821. ISSN 2195-1071
Abstract
Strong coupling between light and matter in a microcavity can produce quasi-particle states termed cavity-polaritons. In cavity architectures containing more than one excitonic species, the photon mode can simultaneously couple to the different excitons, generating new ʻhybrid-polaritonʼ states. It is demonstrated that such hybrid polariton states can energetically connect different molecular species, even when their intermolecular distance is much larger than the Förster transfer radius. Here, this mechanism is unveiled and observed in the time domain energy delocalization in a strongly coupled cavity containing two layers of donor and acceptor molecules, separated by an inert spacer layer of 2 µm thickness. 2D electronic spectroscopy is used, a technique that provides simultaneously high spectral and temporal resolution, to probe the dynamics of the energy flow processes following ultra-fast excitation. It shows that energy is almost instantaneously delocalized among the polariton states, providing a direct connection between very highly separated donor and acceptor molecules. The results are of potential significance for light-harvesting devices, optoelectronics, and bio-photonic systems.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2024 The Authors. Except as otherwise noted, this author-accepted version of a journal article published in Advanced Optical Materials is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | 2D Spectroscopy; energy delocalization; organic microcavities; polariton states; strong coupling |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematical and Physical Sciences |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/M025330/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 18 Sep 2024 08:36 |
Last Modified: | 18 Sep 2024 08:36 |
Status: | Published |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1002/adom.202400821 |
Related URLs: | |
Sustainable Development Goals: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:217347 |
Download
Filename: Energy delocalisation authors final copy.pdf
Licence: CC-BY 4.0