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Title: Manipulating molecules with strong coupling: harvesting triplet excitons in organic exciton microcavities

Abstract

Exciton-polaritons are quasiparticles with mixed photon and exciton character with the potential to modify chemical properties of materials. Here, they are used to provide dark, high-spin triplet-pair states a new pathway to emit light.

Authors:
 [1];  [1]; ORCiD logo [1]; ORCiD logo [2];  [3];  [3];  [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [4]; ORCiD logo [3]; ORCiD logo [2];  [1]; ORCiD logo [1]; ORCiD logo [5]
  1. Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK
  2. Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, USA
  3. Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
  4. Department of Chemistry, University of Kentucky, Lexington, USA
  5. Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK, Department of Chemistry and Biochemistry
Publication Date:
Research Org.:
Univ. of California, San Diego, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1575943
Alternate Identifier(s):
OSTI ID: 1624984
Grant/Contract Number:  
DESC0019188; SC0019188
Resource Type:
Published Article
Journal Name:
Chemical Science
Additional Journal Information:
Journal Name: Chemical Science Journal Volume: 11 Journal Issue: 2; Journal ID: ISSN 2041-6520
Publisher:
Royal Society of Chemistry (RSC)
Country of Publication:
United Kingdom
Language:
English
Subject:
Chemistry

Citation Formats

Polak, Daniel, Jayaprakash, Rahul, Lyons, Thomas P., Martínez-Martínez, Luis Á., Leventis, Anastasia, Fallon, Kealan J., Coulthard, Harriet, Bossanyi, David G., Georgiou, Kyriacos, Petty, II, Anthony J., Anthony, John, Bronstein, Hugo, Yuen-Zhou, Joel, Tartakovskii, Alexander I., Clark, Jenny, and Musser, Andrew J. Manipulating molecules with strong coupling: harvesting triplet excitons in organic exciton microcavities. United Kingdom: N. p., 2020. Web. doi:10.1039/C9SC04950A.
Polak, Daniel, Jayaprakash, Rahul, Lyons, Thomas P., Martínez-Martínez, Luis Á., Leventis, Anastasia, Fallon, Kealan J., Coulthard, Harriet, Bossanyi, David G., Georgiou, Kyriacos, Petty, II, Anthony J., Anthony, John, Bronstein, Hugo, Yuen-Zhou, Joel, Tartakovskii, Alexander I., Clark, Jenny, & Musser, Andrew J. Manipulating molecules with strong coupling: harvesting triplet excitons in organic exciton microcavities. United Kingdom. https://doi.org/10.1039/C9SC04950A
Polak, Daniel, Jayaprakash, Rahul, Lyons, Thomas P., Martínez-Martínez, Luis Á., Leventis, Anastasia, Fallon, Kealan J., Coulthard, Harriet, Bossanyi, David G., Georgiou, Kyriacos, Petty, II, Anthony J., Anthony, John, Bronstein, Hugo, Yuen-Zhou, Joel, Tartakovskii, Alexander I., Clark, Jenny, and Musser, Andrew J. Thu . "Manipulating molecules with strong coupling: harvesting triplet excitons in organic exciton microcavities". United Kingdom. https://doi.org/10.1039/C9SC04950A.
@article{osti_1575943,
title = {Manipulating molecules with strong coupling: harvesting triplet excitons in organic exciton microcavities},
author = {Polak, Daniel and Jayaprakash, Rahul and Lyons, Thomas P. and Martínez-Martínez, Luis Á. and Leventis, Anastasia and Fallon, Kealan J. and Coulthard, Harriet and Bossanyi, David G. and Georgiou, Kyriacos and Petty, II, Anthony J. and Anthony, John and Bronstein, Hugo and Yuen-Zhou, Joel and Tartakovskii, Alexander I. and Clark, Jenny and Musser, Andrew J.},
abstractNote = {Exciton-polaritons are quasiparticles with mixed photon and exciton character with the potential to modify chemical properties of materials. Here, they are used to provide dark, high-spin triplet-pair states a new pathway to emit light.},
doi = {10.1039/C9SC04950A},
journal = {Chemical Science},
number = 2,
volume = 11,
place = {United Kingdom},
year = {Thu Jan 02 00:00:00 EST 2020},
month = {Thu Jan 02 00:00:00 EST 2020}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1039/C9SC04950A

Citation Metrics:
Cited by: 67 works
Citation information provided by
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Figures / Tables:

Fig. 1 Fig. 1: Strong light-matter coupling in optical microcavities. (a) Microcavity structure. A thin film of organic semiconductor or dye dispersed in neutral polymer matrix is deposited in the cavity defined by the two mirrors, here Ag. The thickness of the cavity determines the energy of the confined photonic mode andmore » thus the profile of the electric field inside the cavity, shown here for the λ-mode. Reflection and emission from the cavity are measured as a function of angle θ, with 0° defined as normal to the cavity surface. (b) When the cavity mode and the excitonic transition of the semiconductor are near resonance, these two states can couple, forming hybrid upper and lower polariton states. (c) Unlike the exciton (blue), the cavity mode (gold) exhibits distinct angular dispersion. Coupling between the two yields dispersed polariton branches, with characteristic anti-crossing at the exciton energy. Shading indicates the degree of photonic (gold) vs. excitonic (blue) character in the state. (d) Typical excitonic processes possible within organic semiconductor films. IR: intermolecular relaxation, (R)ISC: (reverse) intersystem crossing, TTA: triplet–triplet annihilation, DF: delayed fluorescence. Solid arrows indicate processes known to modify exciton-polariton emission dynamics, while dashed arrows show processes not typically explored within microcavities.« less

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