Microcavity-like exciton-polaritons can be the primary photoexcitation in bare organic semiconductors.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
11 Nov 2021
11 Nov 2021
Historique:
received:
29
06
2021
accepted:
29
09
2021
entrez:
12
11
2021
pubmed:
13
11
2021
medline:
13
11
2021
Statut:
epublish
Résumé
Strong-coupling between excitons and confined photonic modes can lead to the formation of new quasi-particles termed exciton-polaritons which can display a range of interesting properties such as super-fluidity, ultrafast transport and Bose-Einstein condensation. Strong-coupling typically occurs when an excitonic material is confided in a dielectric or plasmonic microcavity. Here, we show polaritons can form at room temperature in a range of chemically diverse, organic semiconductor thin films, despite the absence of an external cavity. We find evidence of strong light-matter coupling via angle-dependent peak splittings in the reflectivity spectra of the materials and emission from collective polariton states. We additionally show exciton-polaritons are the primary photoexcitation in these organic materials by directly imaging their ultrafast (5 × 10
Identifiants
pubmed: 34764252
doi: 10.1038/s41467-021-26617-w
pii: 10.1038/s41467-021-26617-w
pmc: PMC8585971
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
6519Subventions
Organisme : EC | EU Framework Programme for Research and Innovation H2020 | H2020 Euratom (H2020 Euratom Research and Training Programme 2014-2018)
ID : 758826
Organisme : EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020)
ID : 639088
Organisme : Vetenskapsrådet (Swedish Research Council)
ID : 2014-06948
Organisme : RCUK | Engineering and Physical Sciences Research Council (EPSRC)
ID : EM20527
Organisme : RCUK | Engineering and Physical Sciences Research Council (EPSRC)
ID : EP/M025330/1
Informations de copyright
© 2021. The Author(s).
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