Manipulation of molecular vibrations on condensing Er3+ state densities for 1.5 μm application
Manipulation of molecular vibrations on condensing Er3+ state densities for 1.5 μm application
Vibrational modes of chemical bonds in organic erbium (Er3+) materials play an important role in determining the efficiency of the 1.5 μm Er3+ emission. This work studies the energy coupling of the Er3+ intra-4f transitions and vibrational modes. The results demonstrate that the coupling introduces enormous nonradiative internal relaxation, which condenses the excited erbium population on to the 4I13/2 state. This suggests that vibrational modes can be advantageous for optimizing the branching ratio for the 1.5 μm transition in organic erbium materials. Through control of the quenching effect on to the 4I13/2 state and a reliable determination of intrinsic radiative rates, it is found that the pump power for population inversion can be reduced by an order of magnitude at high erbium concentrations compared to conventional inorganic erbium materials.
9620-9625
Ye, Huanqing
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Gorbaciova, Jelena
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Lyu, Chen
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Burgess, Claire
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Walton, Alex S.
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Zahra, Khadisha M.
3beca827-28a0-46b2-b1c8-e9e6e6f56d5a
Curry, Richard J.
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Bannerman, Rex H.S.
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Gates, James C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Wyatt, Peter B.
51da6a07-34f2-4e35-8a22-e0842471b890
Gillin, William P.
c7d027f3-390c-4fd4-841b-76cc25318b07
7 October 2021
Ye, Huanqing
23858adf-9965-41c0-b8fe-203a97e28ee7
Gorbaciova, Jelena
29c964da-e1bc-419f-9517-2b4e3687afe0
Lyu, Chen
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Burgess, Claire
56532a9b-688e-47c8-9d10-0076d63c8b98
Walton, Alex S.
63f8b25b-0021-4106-84cb-7e730561b0c7
Zahra, Khadisha M.
3beca827-28a0-46b2-b1c8-e9e6e6f56d5a
Curry, Richard J.
409b626f-f0b9-4b5e-a12c-6f8b87d20ee0
Bannerman, Rex H.S.
7f7d5c3e-8e5d-45d5-8fd7-8d1511330e08
Gates, James C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Wyatt, Peter B.
51da6a07-34f2-4e35-8a22-e0842471b890
Gillin, William P.
c7d027f3-390c-4fd4-841b-76cc25318b07
Ye, Huanqing, Gorbaciova, Jelena, Lyu, Chen, Burgess, Claire, Walton, Alex S., Zahra, Khadisha M., Curry, Richard J., Bannerman, Rex H.S., Gates, James C., Wyatt, Peter B. and Gillin, William P.
(2021)
Manipulation of molecular vibrations on condensing Er3+ state densities for 1.5 μm application.
Journal of Physical Chemistry Letters, 12 (39), .
(doi:10.1021/acs.jpclett.1c02691).
Abstract
Vibrational modes of chemical bonds in organic erbium (Er3+) materials play an important role in determining the efficiency of the 1.5 μm Er3+ emission. This work studies the energy coupling of the Er3+ intra-4f transitions and vibrational modes. The results demonstrate that the coupling introduces enormous nonradiative internal relaxation, which condenses the excited erbium population on to the 4I13/2 state. This suggests that vibrational modes can be advantageous for optimizing the branching ratio for the 1.5 μm transition in organic erbium materials. Through control of the quenching effect on to the 4I13/2 state and a reliable determination of intrinsic radiative rates, it is found that the pump power for population inversion can be reduced by an order of magnitude at high erbium concentrations compared to conventional inorganic erbium materials.
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More information
Accepted/In Press date: 24 September 2021
e-pub ahead of print date: 29 September 2021
Published date: 7 October 2021
Additional Information:
C.L. was financially supported by the China Scholarship Council and Queen Mary University of London. W.P.G. acknowledges financial support from IUK (79053) and EPSRC (EP/L020114/1 and EP/P007767/1). XPS measurements in this work were performed at the Henry Royce Institute for Advanced Materials, funded through EPSRC Grants EP/R00661X/1 and EP/P025021/1.
© 2021 American Chemical Society
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Local EPrints ID: 471165
URI: http://eprints.soton.ac.uk/id/eprint/471165
ISSN: 1948-7185
PURE UUID: 5aeeb270-f735-4506-9861-83552a70944f
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Date deposited: 28 Oct 2022 16:52
Last modified: 18 Mar 2025 03:00
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Contributors
Author:
Huanqing Ye
Author:
Jelena Gorbaciova
Author:
Chen Lyu
Author:
Claire Burgess
Author:
Alex S. Walton
Author:
Khadisha M. Zahra
Author:
Richard J. Curry
Author:
Rex H.S. Bannerman
Author:
James C. Gates
Author:
Peter B. Wyatt
Author:
William P. Gillin
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