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Generation of Anti-Stokes fluorescence in a strongly coupled organic semiconductor microcavity

Generation of Anti-Stokes fluorescence in a strongly coupled organic semiconductor microcavity
Generation of Anti-Stokes fluorescence in a strongly coupled organic semiconductor microcavity

We explore the generation of anti-Stokes fluorescence from strongly coupled organic dye microcavities following resonant ground-state excitation. We observe polariton emission along the lower polariton branch, with our results indicating that this process involves a return to the exciton reservoir and the absorption of thermal energy from molecules in a vibrationally excited ground-state. We speculate that the generation of a population of "hot" polaritons is enhanced by the fact that the cavity suppresses the emission of Stokes-shifted fluorescence, as it is energetically located below the cutoff frequency of the cavity.

anti-Stokes fluorescence, exciton-polaritons, microcavities, organic semiconductor
2330-4022
4343-4351
Georgiou, Kyriacos
5bee3224-91f9-414e-8d4b-1d62b52bf01e
Jayaprakash, Rahul
fecb7dcf-cf07-4d22-a34e-6338210874e4
Askitopoulos, Alexis
7ccee4f4-5ea2-408f-beb3-3ff5b281f4e4
Coles, David M.
767b66af-227f-4bd0-a99e-d4ae77cf5106
Lagoudakis, Pavlos G.
ea50c228-f006-4edf-8459-60015d961bbf
Lidzey, David G.
073d4479-103d-401c-bcb2-293decbb9114
Georgiou, Kyriacos
5bee3224-91f9-414e-8d4b-1d62b52bf01e
Jayaprakash, Rahul
fecb7dcf-cf07-4d22-a34e-6338210874e4
Askitopoulos, Alexis
7ccee4f4-5ea2-408f-beb3-3ff5b281f4e4
Coles, David M.
767b66af-227f-4bd0-a99e-d4ae77cf5106
Lagoudakis, Pavlos G.
ea50c228-f006-4edf-8459-60015d961bbf
Lidzey, David G.
073d4479-103d-401c-bcb2-293decbb9114

Georgiou, Kyriacos, Jayaprakash, Rahul, Askitopoulos, Alexis, Coles, David M., Lagoudakis, Pavlos G. and Lidzey, David G. (2018) Generation of Anti-Stokes fluorescence in a strongly coupled organic semiconductor microcavity. ACS Photonics, 5 (11), 4343-4351. (doi:10.1021/acsphotonics.8b00552).

Record type: Article

Abstract

We explore the generation of anti-Stokes fluorescence from strongly coupled organic dye microcavities following resonant ground-state excitation. We observe polariton emission along the lower polariton branch, with our results indicating that this process involves a return to the exciton reservoir and the absorption of thermal energy from molecules in a vibrationally excited ground-state. We speculate that the generation of a population of "hot" polaritons is enhanced by the fact that the cavity suppresses the emission of Stokes-shifted fluorescence, as it is energetically located below the cutoff frequency of the cavity.

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More information

e-pub ahead of print date: 19 October 2018
Published date: 21 November 2018
Keywords: anti-Stokes fluorescence, exciton-polaritons, microcavities, organic semiconductor

Identifiers

Local EPrints ID: 428421
URI: https://eprints.soton.ac.uk/id/eprint/428421
ISSN: 2330-4022
PURE UUID: 1a413212-d78f-4585-9d33-67b32967b340

Catalogue record

Date deposited: 22 Feb 2019 17:31
Last modified: 22 Feb 2019 17:31

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Contributors

Author: Kyriacos Georgiou
Author: Rahul Jayaprakash
Author: Alexis Askitopoulos
Author: David M. Coles
Author: David G. Lidzey

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